Bibliografías temáticas / MODIFIED THEORIES

Literatura académica sobre el tema "MODIFIED THEORIES"

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Publicado: 18 de mayo de 2024

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Artículos de revistas sobre el tema "MODIFIED THEORIES"

Day, Charles. "Testing theories of modified gravity". Physics Today 70, n.º 3 (marzo de 2017): 21. http://dx.doi.org/10.1063/pt.3.3485.

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BAMBA, KAZUHARU, CHAO-QIANG GENG y SHINJI TSUJIKAWA. "THERMODYNAMICS IN MODIFIED GRAVITY THEORIES". International Journal of Modern Physics D 20, n.º 08 (15 de agosto de 2011): 1363–71. http://dx.doi.org/10.1142/s0218271811019542.

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We demonstrate that there exists an equilibrium description of thermodynamics on the apparent horizon in the expanding cosmological background for a wide class of modified gravity theories with the Lagrangian density f(R,ϕ,X), where R is the Ricci scalar and X is the kinetic energy of a scalar field ϕ. This comes from a suitable definition of an energy momentum tensor of the "dark" component obeying the local energy conservation law in the Jordan frame. It is shown that the equilibrium description in terms of the horizon entropy S is convenient because it takes into account the contribution of the horizon entropy Ŝ in non-equilibrium thermodynamics as well as an entropy production term.

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Bamba, Kazuharu y Sergei Odintsov. "Inflationary Cosmology in Modified Gravity Theories". Symmetry 7, n.º 1 (9 de marzo de 2015): 220–40. http://dx.doi.org/10.3390/sym7010220.

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Asada, Hideki. "Gravitational Microlensing in Modified Gravity Theories". Progress of Theoretical Physics 125, n.º 2 (febrero de 2011): 403–10. http://dx.doi.org/10.1143/ptp.125.403.

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Bamba, Kazuharu, Chao-Qiang Geng y Shinji Tsujikawa. "Equilibrium thermodynamics in modified gravitational theories". Physics Letters B 688, n.º 1 (abril de 2010): 101–9. http://dx.doi.org/10.1016/j.physletb.2010.03.070.

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EASSON, DAMIEN A. "MODIFIED GRAVITATIONAL THEORIES AND COSMIC ACCELERATION". International Journal of Modern Physics A 19, n.º 31 (20 de diciembre de 2004): 5343–50. http://dx.doi.org/10.1142/s0217751x04022578.

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Modified gravitational theories can provide alternatives to dark energy as an explaination for the observed late-time cosmic acceleration. Several examples of low-curvature corrections to the Einstein-Hilbert action are studied. These models generically contain unstable de Sitter solutions and, depending on the parameters of the theory, can exhibit late time accelerating attractor solutions.

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Bamba, Kazuharu. "Thermodynamic properties of modified gravity theories". International Journal of Geometric Methods in Modern Physics 13, n.º 06 (15 de junio de 2016): 1630007. http://dx.doi.org/10.1142/s0219887816300075.

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We review thermodynamic properties of modified gravity theories, such as [Formula: see text] gravity and [Formula: see text] gravity, where [Formula: see text] is the scalar curvature and [Formula: see text] is the torsion scalar in teleparallelism. In particular, we explore the equivalence between the equations of motion for modified gravity theories and the Clausius relation in thermodynamics. In addition, thermodynamics of the cosmological apparent horizon is investigated in [Formula: see text] gravity. We show both equilibrium and nonequilibrium descriptions of thermodynamics. It is demonstrated that the second law of thermodynamics in the universe can be met, when the temperature of the outside of the apparent horizon is equivalent to that of the inside of it.

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Cruz-Dombriz, A. de la, A. Dobado y A. L. Maroto. "Black holes in modified gravity theories". Journal of Physics: Conference Series 229 (1 de mayo de 2010): 012033. http://dx.doi.org/10.1088/1742-6596/229/1/012033.

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Felice, Antonio De, Shinji Tsujikawa, Joseph Elliston y Reza Tavakol. "Chaotic inflation in modified gravitational theories". Journal of Cosmology and Astroparticle Physics 2011, n.º 08 (23 de agosto de 2011): 021. http://dx.doi.org/10.1088/1475-7516/2011/08/021.

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Flanagan, Éanna É. "Khronometric Theories of Modified Newtonian Dynamics". Astrophysical Journal 958, n.º 2 (16 de noviembre de 2023): 107. http://dx.doi.org/10.3847/1538-4357/ad003d.

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Abstract In 2011 Blanchet and Marsat suggested a fully relativistic version of Milgrom's modified Newtonian dynamics in which the dynamical degrees of freedom consist of the spacetime metric and a foliation of spacetime, the khronon field. This theory is simpler than the alternative relativistic formulations. We show that the theory has a consistent nonrelativistic or slow-motion limit. Blanchet and Marsat showed that in the slow motion limit, the theory reproduces stationary solutions of modified Newtonian dynamics. We show that these solutions are stable to khronon perturbations in the low acceleration regime, for the cases of spherical, cylindrical, and planar symmetry. For nonstationary systems in the low acceleration regime, we show that the khronon field generally gives an order unity correction to the modified Newtonian dynamics. In particular, there will be an order unity correction to the MOND version of Kepler's third law, potentially relevant to ongoing efforts to test MOND using GAIA observations of wide binaries.

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Tesis sobre el tema "MODIFIED THEORIES"

Sbisa, Fulvio. "Modified theories of gravity". Thesis, University of Portsmouth, 2013. https://researchportal.port.ac.uk/portal/en/theses/modified-theories-of-gravity(3b9310e3-5d97-4e48-aa05-0444d1e89363).html.

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The recent observational data in cosmology seem to indicate that the universe is currently expanding in an accelerated way. This unexpected conclusion can be explained assuming the presence of a non-vanishing yet extremely fine tuned cosmological constant, or invoking the existence of an exotic source of energy, dark energy, which is not observed in laboratory experiments yet seems to dominate the energy budget of the Universe. On the other hand, it may be that these observations are just signalling the fact that Einstein's General Relativity is not the correct description of gravity when we consider distances of the order of the present horizon of the universe. In order to study if the latter explanation is correct, we have to formulate new theories of the gravitational interaction, and see if they admit cosmological solutions which fit the observational data in a satisfactory way. Quite generally, modifying General Relativity introduces new degrees of freedom, which are responsible for the different large distance behaviour. On one hand, often these new degrees of freedom have negative kinetic energy, which implies that the theory is plagued by ghost instabilities. On the other hand, for a modified gravity theory to be phenomenologically viable it is necessary that the extra degrees of freedom are efficiently screened on terrestrial and astrophysical scales. One of the known mechanisms which can screen the extra degrees of freedom is the Vainshtein mechanism, which involves derivative self-interaction terms for these degrees of freedom. In this thesis, we consider two different models, the Cascading DGP and the dRGT massive gravity, which are candidates for viable models to modify gravity at very large distances. Regarding the Cascading DGP model, we consider the minimal (6D) set-up and we perform a perturbative analysis at first order of the behaviour of the gravitational field and of the branes position around background solutions where pure tension is localized on the 4D brane. We consider a specific realization of this set-up where the 5D brane can be considered thin with respect to the 4D one. We show that the thin limit of the 4D brane inside the (already thin) 5D brane is well defined, at least for the configurations that we consider, and confirm that the gravitational field on the 4D brane is finite for a general choice of the energymomentum tensor. We also confirm that there exists a critical tension which separates background configurations which possess a ghost among the perturbation modes, and background configurations which are ghost-free. We find a value for the critical tension which is different from the value which has been obtained in the literature; we comment on the difference between these two results, and perform a numeric calculation in a particular case where the exact solution is known to support the validity of our analysis. Regarding the dRGT massive gravity, we consider the static and spherically symmetric solutions of these theories, and we investigate the effectiveness of the Vainshtein screening mechanism. We focus on the branch of solutions in which the Vainshtein mechanism can occur, and we truncate the analysis to scales below the gravitational Compton wavelength, and consider the weak field limit for the gravitational potentials, while keeping all non-linearities of the mode which is involved in the screening. We determine analytically the number and properties of local solutions which exist asymptotically on large scales, and of local (inner) solutions which exist on small scales. Moreover, we analyze in detail in which cases the solutions match in an intermediate region. We show that asymptotically flat solutions connect only to inner configurations displaying the Vainshtein mechanism, while non asymptotically flat solutions can connect both with inner solutions which display the Vainshtein mechanism, or with solutions which display a self-shielding behaviour of the gravitational field. We show furthermore that there are some regions in the parameter space of the theory where global solutions do not exist, and characterize precisely in which regions the Vainshtein mechanism takes place.

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Sbisa', F. "MODIFIED THEORIES OF GRAVITY". Doctoral thesis, Università degli Studi di Milano, 2013. http://hdl.handle.net/2434/214951.

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The recent observational data in cosmology seem to indicate that the universe is currently expanding in an accelerated way. This unexpected conclusion can be explained assuming the presence of a non-vanishing yet extremely fine tuned cosmological constant, or invoking the existence of an exotic source of energy, dark energy, which is not observed in laboratory experiments yet seems to dominate the energy budget of the Universe. On the other hand, it may be that these observations are just signalling the fact that Einstein's General Relativity is not the correct description of gravity when we consider distances of the order of the present horizon of the universe. In order to study if the latter explanation is correct, we have to formulate new theories of the gravitational interaction, and see if they admit cosmological solutions which fit the observational data in a satisfactory way. A necessary condition for the viability of a theory of ``modified gravity'' is that it has to reproduce to high precision the results of General Relativity in experimental setups where the latter is well tested. Quite in general, modifying General Relativity introduces new degrees of freedom, which are responsible for the different large distance behavior. For a modified gravity theory to be phenomenologically viable, it is necessary that the extra degrees of freedom are efficiently screened on terrestrial and astrophysical scales. One of the known mechanisms which can screen the extra degrees of freedom is known as the Vainshtein mechanism, which involves derivative self-interaction terms for these degrees of freedom. In this thesis, we consider a class of nonlinear massive gravity theories known as dGRT Massive Gravity. These theories are candidates as viable models to modify gravity at very large distances, and, apart from the mass, they contain two free parameters. We investigate the effectiveness of the Vainshtein screening mechanism in this class of theories. There are two branches of static and spherically symmetric solutions, and we consider only the branch in which the Vainshtein mechanism can occur. We truncate the analysis to scales below the gravitational Compton wavelength, and consider the weak f\mbox{}ield limit for the gravitational potentials, while keeping all non-linearities of the mode which is involved in the screening. We determine analytically the number and properties of local solutions which exist asymptotically on large scales, and of local (inner) solutions which exist on small scales. We analyze in detail in which cases the solutions match in an intermediate region. Asymptotically flat solutions connect only to inner configurations displaying the Vainshtein mechanism, while non asymptotically flat solutions can connect both with inner solutions which display the Vainshtein mechanism, or with solutions which display a self-shielding behaviour of the gravitational field. We show furthermore that there are some regions in the parameter space where global solutions do not exist, and characterise precisely in which regions of the phase space the Vainshtein mechanism takes place.

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Bahamonde, Sebastian. "Modified teleparallel theories of gravity". Thesis, University College London (University of London), 2018. http://discovery.ucl.ac.uk/10055604/.

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Teleparallel gravity is an alternative formulation of gravity which has the same field equations as General Relativity (GR), therefore, it is also known as the Teleparallel equivalent of General Relativity (TEGR). This theory is a gauge theory of the translations with the torsion tensor being non-zero but with a vanishing curvature tensor, hence, the manifold is globally flat. An interesting approach for understanding the late-time accelerating behaviour of the Universe is called modified gravity where GR is extended or modified. In the same spirit, since TEGR is equivalent to GR, one can consider its modifications and study if they can describe the current cosmological observations. This thesis is devoted to studying several modified Teleparallel theories of gravity with emphasis on late-time cosmology. Those Teleparallel theories are in general different to the modified theories based on GR, but one can relate and classify them accordingly. Various Teleparallel theories are presented and studied such as Teleparallel scalar-tensor theories, quintom models, Teleparallel non-local gravity, and f(T,B) gravity and its extensions (coupled with matter, extensions of new GR and Gauss-Bonnet) where T is the scalar torsion and B is the boundary term which is related with the Ricci scalar via R=-T+B.

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Michele, Oliosi. "New viable theories of modified gravity : Minimal Theories and Quasidilaton". Kyoto University, 2019. http://hdl.handle.net/2433/244509.

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Uddin, Kotub. "The viability of modified gravity theories". Thesis, Queen Mary, University of London, 2009. http://qmro.qmul.ac.uk/xmlui/handle/123456789/386.

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This thesis studies the viability of classes of modified gravity (MG) theories based on generalisations of the Einstein-Hilbert action. Particular emphasis is given to f(R) theories in both the metric and Palatini formalisms, scalar-tensor theories and generalised Gauss-Bonnet theories. An urgent task at present is to devise stringent tests in order to reduce the range of candidate models based on these theories. In this thesis a detailed study is made of the viability of these models using constraints from requirement of stability, background cosmological dynamics, local gravity constraints (LGC) and matter density perturbations. In each case the conditions required for stability and viability of the background dynamics are presented. In the case of generalised Gauss-Bonnet theories the circumstances leading to the existence and stability of cosmological scaling solutions are established. In the scalar-tensor theories considered here, which includes metric-f(R) theories as a special case, there is a strong coupling of the scalar field to matter in the Einstein frame which violates all LGC. It is shown that using a chameleon mechanism, models that are compatible with LGC may be constructed. It is found that such models, which are also consistent with background dynamics, are constrained to be close to the CDMmodel during the radiation/matter epochs and can lead to the divergence of the equation of state of dark energy. In contrast, such constraints only impose mild restrictions on Palatini-f(R) models. Still more stringent constraints are provided by studying matter density perturbations. In particular, it is shown that the unconventional evolution of perturbations in the Palatini formalism leads to f(R) models in this case to be practically identical to the CDM model. For each case it is also shown that (for viable models) matter perturbation equations derived under a sub-horizon approximation are reliable even for super-Hubble scales provided the oscillating mode does not dominate over the matter-induced mode. Such approximate equations are especially reliable in the Palatini formalism, where the oscillating mode is absent. In summary, the analyses carried out in this thesis suggest that subjectingMG theories to observational constraints confines the viable range of models to be very close to (and in some cases indistinguishable from) the CDM model.

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Hackebill, Aric. "Thermodynamics of Modified Theories of Gravity". VCU Scholars Compass, 2010. http://scholarscompass.vcu.edu/etd/2143.

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Einstein’s equations are derived by following Jacobson’s thermodynamic method. It is seen that a family of possible field equations exist which satisfy the thermodynamic argument. Modified theories of gravity are addressed as possible candidates for replacing dark matter as an explanation for anomalous cosmological phenomena. Many of the proposed modified theories are not powerful enough to explain the currently observed phenomena and are rejected as viable theories of gravity. A surviving candidate, TeVeS, is further analyzed under the aforementioned thermodynamic argument to check for its consistency with thermodynamics.

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Zlosnik, Thomas. "cosmological consequences of modified theories of gravity". Thesis, University of Oxford, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.504343.

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Lima, Nelson Daniel de Aguiar. "Dark energy and modified theories of gravity". Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/23558.

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It is now a consolidated fact that our Universe is undergoing an accelerated expansion. According to Einstein's General Relativity, if the main constituents of our Universe were ordinary and cold dark matter, then we would expect it to be contracting and collapsing due to matter's attractive nature. The simplest explanation we have for this acceleration is in the form of a component with a negative ratio of pressure to density equal to -1 known as cosmological constant, Λ , presently dominating over baryonic and cold dark matter. However, the Λ Cold Dark Matter (Λ CDM) model suffers from a well known fine tuning problem. This led to the formulation of dark energy and modified gravity theories as alternatives to the problem of cosmic acceleration. These theories either include additional degrees of freedom, higher-order equations of motion, extra dimensionalities or imply non-locality. In this thesis we focus on single field scalar tensor theories embedded within Horndeski gravity. Even though there is currently doubt on their ability to explain cosmic acceleration without having a bare cosmological constant on their action, the degree of freedom they introduce mediates an additional fifth force. And while this force has to suppressed on Solar system scales, it can have interesting and observable effects on cosmological scales. Over the next decade there is a surge of surveys that will improve the understanding of our Universe on the largest scales. Hence, in this work, we take several different modified gravity theories and study their impact on cosmological observables. We will analyze the dynamics of linear perturbations on these theories and clearly highlight how they deviate from Λ CDM, allowing to break the degeneracy at the background level. We will also study the evolution of the gravitational potentials on sub horizon scales and provide simplified expressions at this regime and, for some models, obtain constraints using the latest data.

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Mifsud, Jurgen. "Cosmological consequences of theories of modified gravity". Thesis, University of Sheffield, 2018. http://etheses.whiterose.ac.uk/21618/.

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Our theoretical understanding of the dynamical evolution of the Universe has certainly improved during the recently established era of precision cosmology. However, the nature of the dark sector remains the greatest puzzle in cosmology. Although we re–establish that the concordance model of cosmology is in agreement with current cosmological observations, this simplistic model is unequivocally theoretically unappealing. Thence, we investigate a number of alternative cosmological models and illustrate their distinctive cosmological consequences. For instance, we consider a scalar–tensor theory of gravitation, such that the minimally coupled scalar field is explicitly coupled to multiple fluid components. The assumed coupling functions are specified by the theoretically well–motivated conformal and disformal coupling functions. We perform a dynamical systems analysis, in which we establish the existence and stability conditions for every fixed point, and illustrate that disformally coupled systems have a dissimilar cosmological evolution with respect to the conformally coupled and uncoupled systems. We further show that a disformal coupling between the matter and radiation sectors is characterised by a varying fine–structure constant. Moreover, a direct coupling between dark energy and dark matter is not theoretically forbidden and might be incorporated in extensions of the standard model of particle physics. We consider a coupled quintessence model, in which the dark energy scalar field only couples to dark matter via the conformal and disformal coupling functions, and is decoupled from the conventional baryonic matter sector. We scrutinise the distinctive features of this cosmological model, where we particularly show that when the dark sector constituents are disformally coupled, intermediate–scales and time–dependent damped oscillations appear in the matter growth rate function. We confront this coupled quintessence model with current cosmological data sets, and illustrate that Nature is consistent with a null coupling within the dark sector of the Universe.

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Sebastiani, Lorenzo. "General Aspects of Modified Theories of Gravity". Doctoral thesis, Università degli studi di Trento, 2011. https://hdl.handle.net/11572/367870.

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The aim of this work is to investigate the both, some mathematical and physical general aspect of modified gravity, and, more specifically, the proprieties of viable, realistic models of modified gravity which can be used to reproduce the inflation and the dark energy epoch of universe today.

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Libros sobre el tema "MODIFIED THEORIES"

I, Guendelman E. y International Workshop on Modern Modified Theories of Gravitation and Cosmology (1997 : Beer Sheva, Israel), eds. Modern modified theories of gravitation and cosmology: International Workshop : Ben Gurion University, Beer Sheva, Israel, June 29-30, 1997. Palm Harbor, Florida: Hadronic Press, Inc., 1998.

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Stavrinos, Panayiotis y Emmanuel N. Saridakis, eds. Modified Theories of Gravity and Cosmological Applications. MDPI, 2023. http://dx.doi.org/10.3390/books978-3-0365-5830-1.

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Li, Baojiu y Kazuya Koyama. Modified Gravity: Progresses and Outlook of Theories, Numerical Techniques and Observational Tests. World Scientific Publishing Co Pte Ltd, 2020.

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Smarandache, Florentin. Unification of Art Theories (UAT) = composed, found, changed, modified, altered, graffiti, polyvalent art=. Renaissance Press, 2007.

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Guendelman, E. I. Modern Modified Theories of Gravitation & Cosmologies: Proceedings of International Workshop Held at Ben Gurion University Israel June 29-30, 1997. Hadronic Press, Incorporated, 1998.

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Butz, Martin V. y Esther F. Kutter. Language, Concepts, and Abstract Thought. Oxford University Press, 2017. http://dx.doi.org/10.1093/acprof:oso/9780198739692.003.0013.

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Language is probably the most complex form of universal communication. A finite set of words enables us to express a mere infinite number of thoughts and ideas, which we set together by obeying grammatical rules and compositional, semantic knowledge. This chapter addresses how human language abilities have evolved and how they develop. A short introduction to linguistics covers the most important conceptualized aspects, including language production, phonology, syntax, semantics, and pragmatics. The brain considers these linguistic aspects seemingly in parallel when producing and comprehending sentences. The brain develops some dedicated language modules, which strongly interact with other modules. Evolution appears to have recruited prelinguistic developmental neural structures and modified them into maximally language-suitable structures. Moreover, evolution has most likely evolved language to further facilitate social cooperation and coordination, including the further development of theories of the minds of others. Language develops in a human child building on prelinguistic concepts, which are based on motor control-oriented structures detailed in the previous chapter. A final look at actual linguistic communication emphasizes that an imaginary common ground and individual private grounds unfold between speaker and listener, characterizing what is actually commonly and privately communicated and understood.

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Devetak, Richard. International Relations Meets Critical Theory. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198823568.003.0004.

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This chapter provides an account of the reception of critical theory in international relations in the early 1980s. It is structured around detailed studies of four pioneering international relations theorists: R. B. J. Walker, Richard K. Ashley, Andrew Linklater, and R. W. Cox. In their different ways these international relations scholars helped fashion the critical persona on the basis of a modified philosophical reflexivity inherited from German idealism and historical materialism, and their Frankfurt School heirs. The end result of this reception was to refigure the theorist as a critical intellectual, capable of achieving higher levels of ethical comportment on the basis of Enlightenment self-reflection, and deeper insight into the latent forces of political transformation on the basis of dialectical-philosophical history.

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Rhodes, R. A. W. Analysing Networks as Narratives of Beliefs and Practices. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198786108.003.0007.

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This chapter decentres policy networks; that is, it focuses on the way in which a network is created, sustained, or modified through the beliefs and actions of individuals. The first section outlines an anti-foundational approach to interpretation and the analysis of meaning based around the concepts of beliefs, practices, traditions, and dilemmas. The second section criticizes modernist-empiricist studies of networks. The third section uses the example of the ‘Everyday Maker’ to illustrate a decentred approach and show how it overcomes some of the perennial criticisms of policy networks such as the theory’s inability to explain change. The chapter shows how decentring, traditions, and dilemmas can be used to understand networks in governance.

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Meijers, Tim. Justice Between Generations. Oxford University Press, 2018. http://dx.doi.org/10.1093/acrefore/9780190228637.013.233.

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A wide range of issues in moral, political, and legal philosophy fall under the heading of “intergenerational justice,” such as questions of justice between the young and the old, obligations to more-or-less distant past and future generations, generational sovereignty, and the boundaries of democratic decision-making.These issues deserve our attention first because they are of great social importance. Solving the challenges raised by aging, stable pension funding, and increasing healthcare costs, for example, requires a view on what justice between age groups demands. Climate change, resource depletion, environmental degradation, population growth, and the like, raise serious concerns about the conditions under which future people will have to live. What kind of world should we bequest to future generations?Second, this debate has theoretical significance. Questions of intergenerational justice force reconsideration of the fundamental commitments (on scope, pattern, site, and currency) of existing moral and political theories. The age-group debate has led to fundamental questions about the pattern of distributive justice: Should we care about people’s lives considered as whole being equally good? This has implausible implications. Can existing accounts be modified to avoid such problematic consequences?Justice between nonoverlapping generations raises a different set of questions. One important worry is about the pattern of intergenerational justice—are future generations owed equality, or should intergenerational justice be cast in terms of sufficiency? Another issue is the currency of intergenerational justice: what kind of goods should be transferred? Perhaps the most puzzling worry resulting from this debate translates into a worry about scope: do obligations of justice extend to future people? Most conventional views on the scope of justice—those that focus on shared coercive institutions, a common culture, a cooperative scheme for mutual advantage—cannot easily be extended to include future generations. Even humanity-based views, which seem most hospitable to the inclusion of future generations, are confronted with what Parfit called the nonidentity problem, which results from the fact that future people are mostly possible people: because of the lack of a fixed identity of future people, it is often impossible to harm them in the comparative sense.

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Maloney, J. Christopher. Direct Realism and Illusion. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190854751.003.0008.

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The supposed problem of perceptual error, including illusion and hallucination, has led most theories of perception to deny formulations of direct realism. The standard response to this apparent problem adopts the mistaken presupposition that perception is indeed liable to error. However, the prevailing conditions of observation are themselves elements of perceptual representation, functioning in the manner of predicate modifiers. They ensure that the predicates applied in perceptual representations do indeed correctly attribute properties that perceived physical objects actually instantiate. Thus, perceptual representations are immune to misrepresentation of the sort misguidedly supposed by the spurious problem of perceptual misrepresentation. Granted the possibility that perceptual attribution admits of predicate modification, it is quite possible that perceptual experience permits both rudimentary and sophisticated conceptualization. Moreover, such treatment of perceptual predication rewards by providing an account of aspect alteration exemplified by perception of ambiguous stimuli.

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Capítulos de libros sobre el tema "MODIFIED THEORIES"

Berman, David, Hugo Garcia-Compean, Paulius Miškinis, Miao Li, Daniele Oriti, Steven Duplij, Steven Duplij et al. "Modified Measure Theories". En Concise Encyclopedia of Supersymmetry, 242–43. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/1-4020-4522-0_321.

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Martín-Moruno, Prado. "Horndeski/Galileon Theories". En Modified Gravity and Cosmology, 79–87. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-83715-0_6.

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Pearson, Jonathan. "Explicit Theories". En Generalized Perturbations in Modified Gravity and Dark Energy, 127–40. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-01210-0_5.

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Bouhmadi-López, Mariam y Prado Martín-Moruno. "Quantum Cosmology in Modified Theories of Gravity". En Modified Gravity and Cosmology, 275–78. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-83715-0_17.

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Pearson, Jonathan. "High Derivative Theories". En Generalized Perturbations in Modified Gravity and Dark Energy, 81–126. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-01210-0_4.

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Hernando, J. A. y Z. Gamba. "A Modified BGY Equation for Classical Fluids". En Condensed Matter Theories, 543–49. Boston, MA: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-2934-7_48.

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Glicenstein, Jean-François y Volker Perlick. "Gravitational Lensing in Theories with Lorentz Invariance Violation". En Modified and Quantum Gravity, 199–238. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-31520-6_5.

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de la Cruz-Dombriz, Álvaro. "A Flavour on f(R) Theories: Theory and Observations". En Modified Gravity and Cosmology, 43–78. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-83715-0_5.

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Mavromatos, Nick E. "Lorentz Symmetry Violation in String-Inspired Effective Modified Gravity Theories". En Modified and Quantum Gravity, 3–48. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-31520-6_1.

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Kuntz, Iberê. "Equivalence Between Dark Matter and Modified Gravity". En Gravitational Theories Beyond General Relativity, 23–34. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-21197-4_2.

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Actas de conferencias sobre el tema "MODIFIED THEORIES"

Arbuzova, Elena. "Instabilities in modified theories of gravity". En Multifrequency Behaviour of High Energy Cosmic Sources - XIII. Trieste, Italy: Sissa Medialab, 2020. http://dx.doi.org/10.22323/1.362.0026.

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El qortobi, Mounia, Amine Rahj, Jamal Bentahar y Rachida Dssouli. "Test Generation Tool for Modified Condition/Decision Coverage". En SITA'20: Theories and Applications. New York, NY, USA: ACM, 2020. http://dx.doi.org/10.1145/3419604.3419628.

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Izumi, Keisuke. "Theoretical constraints on modified theories of gravity". En The 3rd International Symposium on “Quest for the Origin of Particles and the Universe". Trieste, Italy: Sissa Medialab, 2017. http://dx.doi.org/10.22323/1.294.0030.

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MOTOHASHI, HAYATO, TSUTOMU KOBAYASHI y TERUAKI SUYAMA. "BLACK HOLE PERTURBATION IN MODIFIED GRAVITY THEORIES". En Proceedings of the MG13 Meeting on General Relativity. WORLD SCIENTIFIC, 2015. http://dx.doi.org/10.1142/9789814623995_0152.

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Hirano, Koichi y Zen Komiya. "Observational constraints on general modified gravitational theories". En ORIGIN OF MATTER AND EVOLUTION OF GALAXIES 2011. AIP, 2012. http://dx.doi.org/10.1063/1.4763449.

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de la Cruz-Dombriz, A., A. Dobado, A. L. Maroto, Kerstin E. Kunze, Marc Mars y Miguel Angel Vázquez-Mozo. "Cosmological density perturbations in modified gravity theories". En PHYSICS AND MATHEMATICS OF GRAVITATION: Proceedings of the Spanish Relativity Meeting 2008. AIP, 2009. http://dx.doi.org/10.1063/1.3141280.

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Fernández-Jambrina, Leonardo, Ruth Lazkoz, Kerstin E. Kunze, Marc Mars y Miguel Angel Vázquez-Mozo. "Cosmological singularities and modified theories of gravity". En PHYSICS AND MATHEMATICS OF GRAVITATION: Proceedings of the Spanish Relativity Meeting 2008. AIP, 2009. http://dx.doi.org/10.1063/1.3141286.

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Aviles, Alejandro. "Testing modified gravity theories with marked statistics". En Proceedings of the MG16 Meeting on General Relativity. WORLD SCIENTIFIC, 2023. http://dx.doi.org/10.1142/9789811269776_0119.

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GARATTINI, REMO y FRANCISCO S. N. LOBO. "SELF-SUSTAINED TRAVERSABLE WORMHOLES IN MODIFIED GRAVITY THEORIES". En Proceedings of the MG13 Meeting on General Relativity. WORLD SCIENTIFIC, 2015. http://dx.doi.org/10.1142/9789814623995_0126.

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Murk, Sebastian. "Constraining modified gravity theories with physical black holes". En Proceedings of the MG16 Meeting on General Relativity. WORLD SCIENTIFIC, 2023. http://dx.doi.org/10.1142/9789811269776_0109.

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Informes sobre el tema "MODIFIED THEORIES"

Lim, Hyun. Nonlinear Dynamics of Modified Gravity Theories. Office of Scientific and Technical Information (OSTI), diciembre de 2020. http://dx.doi.org/10.2172/1727409.

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Awada, M. A. The supersymmetric generalized modified KdV hierarchy and odd minimal superconformal field theories coupled to 2D supergravity: 2. Office of Scientific and Technical Information (OSTI), enero de 1990. http://dx.doi.org/10.2172/6172517.

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Kuznetsov, Victor, Vladislav Litvinenko, Egor Bykov y Vadim Lukin. A program for determining the area of the object entering the IR sensor grid, as well as determining the dynamic characteristics. Science and Innovation Center Publishing House, abril de 2021. http://dx.doi.org/10.12731/bykov.0415.15042021.

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Resumen

Currently, to evaluate the dynamic characteristics of objects, quite a large number of devices are used in the form of chronographs, which consist of various optical, thermal and laser sensors. Among the problems of these devices, the following can be distinguished: the lack of recording of the received data; the inaccessibility of taking into account the trajectory of the object flying in the sensor area, as well as taking into consideration the trajectory of the object during the approach to the device frame. The signal received from the infrared sensors is recorded in a separate document in txt format, in the form of a table. When you turn to the document, data is read from the current position of the input data stream in the specified list by an argument in accordance with the given condition. As a result of reading the data, it forms an array that includes N number of columns. The array is constructed in a such way that the first column includes time values, and columns 2...N- the value of voltage . The algorithm uses cycles that perform the function of deleting array rows where there is a fact of exceeding the threshold value in more than two columns, as well as rows where the threshold level was not exceeded. The modified array is converted into two new arrays, each of which includes data from different sensor frames. An array with the coordinates of the centers of the sensor operation zones was created to apply the Pythagorean theorem in three-dimensional space, which is necessary for calculating the exact distance between the zones. The time is determined by the difference in the response of the first and second sensor frames. Knowing the path and time, we are able to calculate the exact speed of the object. For visualization, the oscillograms of each sensor channel were displayed, and a chronograph model was created. The chronograph model highlights in purple the area where the threshold has been exceeded.

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