Literatura académica sobre el tema "Analog cosmology"
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Artículos de revistas sobre el tema "Analog cosmology"
Bilic, Neven y Dijana Tolic. "Analogue cosmology in a hadronic fluid". Facta universitatis - series: Physics, Chemistry and Technology 12, n.º 2 (2014): 77–83. http://dx.doi.org/10.2298/fupct1402077b.
Texto completoELLIS, JOHN, D. V. NANOPOULOS y N. E. MAVROMATOS. "A STRING SCENARIO FOR INFLATIONARY COSMOLOGY". Modern Physics Letters A 10, n.º 23 (30 de julio de 1995): 1685–98. http://dx.doi.org/10.1142/s0217732395001800.
Texto completoFalomir, Horacio, Jorge Gamboa y Fernando Mendez. "A Noncommutative Model of Cosmology with Two Metrics". Symmetry 12, n.º 3 (9 de marzo de 2020): 435. http://dx.doi.org/10.3390/sym12030435.
Texto completoSocorro, J., Luis O. Pimentel y Abraham Espinoza-García. "Classical Bianchi Type I Cosmology in K-Essence Theory". Advances in High Energy Physics 2014 (2014): 1–11. http://dx.doi.org/10.1155/2014/805164.
Texto completoGÓRKA, PRZEMYSŁAW, TOMASZ KOSTRZEWA y ENRIQUE G. REYES. "THE RELLICH LEMMA ON COMPACT ABELIAN GROUPS AND EQUATIONS OF INFINITE ORDER". International Journal of Geometric Methods in Modern Physics 10, n.º 02 (5 de diciembre de 2012): 1220030. http://dx.doi.org/10.1142/s0219887812200307.
Texto completoGórka, Przemysław, Tomasz Kostrzewa y Enrique G. Reyes. "Sobolev Spaces on Locally Compact Abelian Groups: Compact Embeddings and Local Spaces". Journal of Function Spaces 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/404738.
Texto completoGIANG, DAN y CHARLES C. DYER. "CONSTRUCTING AN INHOMOGENEOUS BRANEWORLD THROUGH SPACE–TIME MATCHING". International Journal of Modern Physics D 18, n.º 12 (30 de noviembre de 2009): 1913–41. http://dx.doi.org/10.1142/s021827180901576x.
Texto completoGorobey, Natalia y Alexander Lukyanenko. "Ground state of the universe in quantum cosmology". International Journal of Modern Physics A 31, n.º 02n03 (20 de enero de 2016): 1641014. http://dx.doi.org/10.1142/s0217751x16410141.
Texto completoK.Shchigolev, V. "Applying He's variational iteration method to FRW cosmology". International Journal of Advanced Astronomy 7, n.º 2 (20 de septiembre de 2019): 39. http://dx.doi.org/10.14419/ijaa.v7i2.29428.
Texto completoNojiri, Shin'ichi y Sergei D. Odintsov. "Multiple lambda cosmology: Dark fluid with time-dependent equation of state as classical analog of cosmological landscape". Physics Letters B 649, n.º 5-6 (junio de 2007): 440–44. http://dx.doi.org/10.1016/j.physletb.2007.02.042.
Texto completoTesis sobre el tema "Analog cosmology"
Rossoni, Mattos Diego. "Design and characterization of an 8gsps flash analog-to-digital converter for radio astronomy and cosmology applications". Thesis, Bordeaux 1, 2012. http://www.theses.fr/2012BOR14653/document.
Texto completoAn Analog-to-Digital Converter (ADC) has been developed for astrophysical and cosmological applications. This class of circuits demands, especially in the millimeter wavelength domain, ultra wide bandwidths, ultra high sampling frequencies and a low resolution. The “flash” architecture has been chosen for its speed and bandwidth. This ADC samples at 8Gsps and it has been fabricated in 65nm CMOS technology from STMicroelectornics.The design has been done in two steps. The first was the prototype of a track-and-hold circuit. The second was the ADC. Both circuits have been characterized and from these results some perspectives for further improvements have been proposed.In order to achieve the final goal of the multi-bit ADC (6-bit resolution) we have decided to design a first prototype with half the final resolution, namely a 3-bit resolution ADC. Our idea was, with this first prototype, to conduct a first analysis of the behavior of the integrated functional blocks and, consequently, find the correct improvements required for the ADC final version
Holanda, Rodrigo Fernandes Lira de. "Análogos clássicos para cosmologias relativísticas aceleradas: uma abordagem lagrangiana". Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/14/14131/tde-19022008-172443/.
Texto completoIn this dissertation, a review of the Newtonian and neo-Newtonian cosmological models based on the classical hydrodynamics formulation is presented with special emphasis to the basic results and the main limitations of such approaches. Next, we show that the classical Lagrangian description as proposed by Lima, Moreira & Santos (1998) for simple fluids, can be generalized to include fluid mixtures, and, therefore, more realistic cosmologies containing baryons, dark matter and dark energy, as well as, any kind of interaction among such components. In the lagrangian description, the dynamic behavior of the scale factor a(t), as predicted by the relativistic cosmologies, is replaced by the unidimensional motion of a test particle with mass m under the action of a classical potential, V(x), where x(t) is the coordinate of the particle. The treatment can be applied for many different scenarios of dark energy. In order to exemplify, we discuss with detail the following models containing dark matter and dark energy: XCDM, X(z)CDM, Lambda(t)CDM and the Chaplygin gas. For completeness, FRW type multidimensional models are also considered. For all these models, the curvature parameter k of the spatial sections in the relativistic cosmologies determines the total energy by the relation, E=-mk/2, as occurs in the simple fluid models. The dynamic property associated with the present accelerating stage of the Universe are univocally described in terms of the potential function of the system. Finally, by using the data from luminosity distance of supernovae type Ia, we discuss how the unidimensional potential can be reconstructed from the observations.
Azevedo, Frankbelson dos Santos. "Contribution to the Study of Topological Defects and their Applications in Optics". Thesis, Université de Lorraine, 2018. http://www.theses.fr/2018LORR0198/document.
Texto completoIn this thesis, we study topological defects in cosmology and condensed matter physics. We propose to investigate the analogy between defects that appear in these two realms with respect to aspects of formation and gravity. For instance, we discuss the analogy between cosmic strings and disclinations existing in liquid crystals. In particular, we concentrate our efforts on the study of gravity/geometric aspects of two linear defects: wiggly cosmic string and hyperbolic disclination. The gravitational field of wiggly strings is analogous to the one of regular strings, but with a non-vanishing Newtonian potential. For that reason, besides the spacetime has conical geometry, the string also produces gravitational pullings on objects located in its vicinity. This new fact leads to new effects in addition to the already expected gravitational lensing. In fact, we find that both massive and massless fields are confined to the string when we examine non-perpendicular propagation to the string axis. This statement is based on the analysis of trajectories and by applying the wave formalism. Finally, we propose the design of an optical waveguide having the specific refractive index likely to simulate the effects of wiggly strings in the laboratory. Even though the hyperbolic disclination is very similar to the ordinary one, the resulting medium is an anisotropic metamaterial, in which the ratio between ordinary and extraordinary permittivities is negative. In fact, as our analysis concerning the hyperbolic medium is very close to the previous one for the wiggly string, we also apply the wave formalism together with geometrical optics treatment to understand how light propagates. Interestingly, we find that for one specific director field arrangement of the hyperbolic liquid crystal metamaterial, light is confined and directed to the metamaterial axis. More specifically, we come into possession of an optical device that concentrates light rays, no matter how they are injected in it
ROITBERG, ALICE. "Gross-Pitaevskii hydrodynamics in Riemannian manifolds and application in Black Hole cosmology". Doctoral thesis, Università degli Studi di Milano-Bicocca, 2023. https://hdl.handle.net/10281/404710.
Texto completoIn this thesis we analyze the physical implications of the geometry of the ambient space in the context of Bose-Einstein condensates (BECs) and possible applications to the field of analogue models in the cosmology of black holes. To this end we derive the hydrodynamic formulation of the Gross-Pitaevskii equation (GPE) in the case of a generic Riemannian manifold. We observe the appearance of a new force, which essentially depends on two parameters: the geometry of the manifold and the first derivatives of the density profile. The stationary conditions are studied in relation to the presence of manifolds with negative scalar curvature. By analyzing these manifolds, an explicit relationship is established between the negatively curved surfaces and the sine-Gordon equation, which results in an approximation of the GPE in the presence of phase coupling. By assuming stationary conditions, we obtain a new type of Einstein field equations and we look for other possible connections between the equations governing condensates and cosmology. For this purpose, we consider relativistic BECs, that are used in the study of the early universe and its expansion, and we obtain Einstein equation in the multi-dimensional case. Then we consider the analogue models used for the study of the formation of black holes and for the calculation of Hawking radiation. Through a linearization process it is possible to derive a Lorentzian acoustic metric for the phase fluctuations; for this purpose, we consider the case of a straight vortex defect with a density profile where the first derivatives have maximum value inside the vortex tube and the geometry of the ambient space becomes relevant. In this situation it turns out that it is possible to determine a Lorentzian metric, and some useful approximations are proposed for its explicit computation. Finally, some concluding remarks are presented on possible future research directions, given by the study of the evolution of isophase surfaces in relativistic cases, and the study of condensates subject to twist.
Geier, Kevin Thomas. "Probing Dynamics and Correlations in Cold-Atom Quantum Simulators". Doctoral thesis, Università degli studi di Trento, 2022. http://hdl.handle.net/11572/351120.
Texto completoI simulatori quantistici ad atomi freddi offrono possibilità uniche per preparare, manipolare e sondare sistemi quantistici a molti corpi. Tuttavia, nonostante l'alto livello di controllo raggiunto negli esperimenti moderni, non tutte le osservabili di interesse sono facilmente accessibili. Lo scopo di questa tesi è quello di stabilire protocolli per misurare delle proprietà statiche e dinamiche dei sistemi quantistici attualmente inaccessibili. La fattibilità sperimentale di questi schemi è illustrata mediante simulazioni numeriche per applicazioni rilevanti nella fisica a molti corpi e nella simulazione quantistica. In particolare, introduciamo un metodo generale per misurare le correlazioni dinamiche basato su una risposta lineare non hermitiana. Ciò consente test imparziali della famosa relazione fluttuazione-dissipazione come sonda di termalizzazione in sistemi quantistici isolati. Inoltre, sviluppiamo tecniche basate su ancilla per la misura di correnti e correlazioni di corrente, consentendo la caratterizzazione della materia quantistica fortemente correlata. Un'altra applicazione è orientata a rivelare l'impronta della supersolidità nei gas Bose con accoppiamento spin-orbita eccitando il corrispondente modo di Goldstone. Infine, esploriamo uno scenario per la simulazione quantistica della dinamica di riscaldamento post-inflazione modulando parametricamente un gas Bose e portandolo nel regime della dinamica universale lontana dall'equilibrio. I protocolli presentati si applicano anche ad altre piattaforme di simulazione quantistica analogica e aprono quindi applicazioni promettenti nel campo della scienza e della tecnologia quantistica.
Quantensimulatoren auf Basis ultrakalter Atome eröffnen einzigartige Möglichkeiten zur Präparation, Manipulation und Untersuchung von Quanten-Vielteilchen-Systemen. Trotz des hohen Maßes an Kontrolle in modernen Experimenten sind jedoch nicht alle interessanten Observablen auf einfache Weise zugänglich. Ziel dieser Arbeit ist es, Protokolle zur Messung aktuell nur schwer erfassbarer statischer und dynamischer Eigenschaften von Quantensystemen zu etablieren. Die experimentelle Realisierbarkeit dieser Verfahren wird durch numerische Simulationen anhand relevanter Anwendungen in der Vielteilchenphysik und Quantensimulation veranschaulicht. Insbesondere wird eine allgemeine Methode zur Messung dynamischer Korrelationen basierend auf der linearen Antwort auf nicht-hermitesche Störungen vorgestellt. Diese ermöglicht unabhängige Tests des berühmten Fluktuations-Dissipations-Theorems als Indikator der Thermalisierung isolierter Quantensysteme. Darüber hinaus werden Verfahren zur Messung von Strömen und Strom-Korrelationen mittels Kopplung an einen Hilfszustand entwickelt, welche die Charakterisierung stark korrelierter Quantenmaterie erlauben. Eine weitere Anwendung zielt auf die Enthüllung spezifischer Merkmale von Supersolidität in Spin-Bahn-gekoppelten Bose-Einstein-Kondensaten ab, indem die relevanten Goldstone-Moden angeregt werden. Schließlich wird ein Szenario zur Quantensimulation post-inflationärer Thermalisierungsdynamik durch die parametrische Anregung eines Bose-Gases in das Regime universeller Dynamik fern des Gleichgewichts erschlossen. Die dargestellten Protokolle lassen sich auch auf andere Plattformen für analoge Quantensimulation übertragen und eröffnen damit vielversprechende Anwendungen auf dem Gebiet der Quantentechnologie.
Reyburn, Duncan. "Chestertonian dramatology". Thesis, University of Pretoria, 2012. http://hdl.handle.net/2263/30301.
Texto completoThesis (PhD)--University of Pretoria, 2012.
Visual Arts
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Radermacher, Katharina Maria. "Strong Cosmic Censorship and Cosmic No-Hair in spacetimes with symmetries". Doctoral thesis, KTH, Matematik (Avd.), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-220400.
Texto completoDenna avhandling består av tre artiklar som undersöker det asymptotiska beteendet hos kosmologiska rumstider med symmetrier som uppstår i Matematisk Allmän Relativitetsteori. I Artikel A och B studerar vi rumstider med Bianchi symmetri och där materiemodellen är en ideal fluid. Vi undersöker beteendet av sådana rumstider nära ursprungssingulariteten ('Big Bang'). I Artikel A bevisar vi att den Starka Kosmiska Censur-förmodan håller för icke-exceptionella Bianchi klass B-rumstider. Med hjälp av expansions-normaliserade variabler visar vi detaljerade asymptotiska uppskattningar. I Artikel B visar vi liknande uppskattningar för stela fluider. I Artikel C betraktar vi T2-symmetriska rumstider som uppfyller Einsteins ekvationer för ett icke-linjärt skalärfält. För givna begynnelsedata visar vi global existens och entydighet av lösningar till motsvarande differentialekvationer för all framtid. I det speciella fallet med en konstant potential, en situation som motsvarar ett linjärt skalärfält på en bakgrund med en positiv kosmologisk konstant, undersöker vi i detalj det asymptotiska beteendet mot framtiden. Vi visar att den Kosmiska Inget-Hår-förmodan håller för lösningar som uppfyller en ytterligare a priori uppskattning, en uppskattning som vi visar gäller i T3-Gowdy-symmetri.
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Lacoste, Frédéric. "L'oiseau dans la poésie de Saint-John Perse, Kenneth White et Philippe Jaccottet : une pensée analogique au service du mystère". Bordeaux 3, 2006. https://extranet.u-bordeaux-montaigne.fr/memoires/diffusion.php?nnt=2006BOR30021.
Texto completoThe question of the bird in contemporary poetry seems to be obvious. It's really impossible to open a collection of poems without seeing lots of explicit references to the bird : his fly, his singing, and his discreet but permanent presence. How to explain this recurrence in contemporary production ? And what's the foundation of the bird's particularity in the animal kingdom ? After justifying the connection of the three poets of our corpus, we based our work on analogical and transdiciplinary viewpoints. Reviving the medieval mysticism, poetry looks for the limits of human nature in the world-macrocosm. The bird, that seems the last limit for the human psychism, allows us to redefine animality in accordance with a principle of "consanguinity" (Saint-John Perse). Against the modern proclivity to dispersion and catalogue, this analogical thought circulating in the poems of our authors, wants to reconstruct the weft, to "sew up the universe". The metaphysical dimension, that is not often clearly claimed by our poets, is always underlying. Beyond a description of the real world, that is leaning on the precision of the science, another dimension, verging on rilkean "Ouvert", impregnates their works. The bird, through the patterns of the flight and the singing, draws the lines of poetics linked by aesthetic modernity
Libros sobre el tema "Analog cosmology"
Cosmology and self in the Apostle Paul: The material spirit. Oxford: Oxford University Press, 2010.
Buscar texto completoWar and ethics in the ancient Near East: Military violence in light of cosmology and history. Berlin: Walter de Gruyter, 2009.
Buscar texto completoAnnihilation or renewal?: The meaning and function of new creation in the book of Revelation. Tübingen: Mohr Siebeck, 2011.
Buscar texto completoMashhoon, Bahram. Nonlocal Newtonian Cosmology. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198803805.003.0010.
Texto completoWittman, David M. Beyond the Schwarzschild Metric. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780199658633.003.0019.
Texto completoSchenck, Kenneth L. Cosmology and Eschatology in Hebrews: The Settings of the Sacrifice. Cambridge University Press, 2007.
Buscar texto completoSchenck, Kenneth L. Cosmology and Eschatology in Hebrews: The Settings of the Sacrifice. Cambridge University Press, 2009.
Buscar texto completoSchenck, Kenneth L. Cosmology and Eschatology in Hebrews: The Settings of the Sacrifice. Cambridge University Press, 2008.
Buscar texto completoSchenck, Kenneth L. Cosmology and Eschatology in Hebrews: The Settings of the Sacrifice. Cambridge University Press, 2010.
Buscar texto completoSchenck, Kenneth L. Cosmology and Eschatology in Hebrews: The Settings of the Sacrifice. Cambridge University Press, 2007.
Buscar texto completoCapítulos de libros sobre el tema "Analog cosmology"
"THE GOLD ANALOGY IN THE TIMAEUS". En Platonic cosmology, 99–107. BRILL, 1985. http://dx.doi.org/10.1163/9789004320642_006.
Texto completoAnderson, Judith H. "Proportional Thinking in Kepler’s Science of Light". En Light and Death. Fordham University Press, 2017. http://dx.doi.org/10.5422/fordham/9780823272778.003.0006.
Texto completoAllen, Edward. "Nocturne". En Forms of Late Modernist Lyric, 243–78. Liverpool University Press, 2022. http://dx.doi.org/10.3828/liverpool/9781789622423.003.0011.
Texto completoActas de conferencias sobre el tema "Analog cosmology"
PORTO, RAFAEL A. y A. ZEE. "REASONING BY ANALOGY: ATTEMPTS TO SOLVE THE COSMOLOGICAL CONSTANT PARADOX". En Quantum Mechanics, Elementary Particles, Quantum Cosmology and Complexity. WORLD SCIENTIFIC, 2010. http://dx.doi.org/10.1142/9789814335614_0035.
Texto completoMarshall, Oriel, Rita Tojeiro y Anne-Marie Weijmans. "Demonstrating cosmological and Doppler redshift in the classroom". En Symposium on Space Educational Activities (SSAE). Universitat Politècnica de Catalunya, 2022. http://dx.doi.org/10.5821/conference-9788419184405.098.
Texto completoANDRADE, GIOVANI LUZ, RAMON ALVES DOS SANTOS, IAN LIMA SANTANA y CARLOS TAKIYA. "SOBRE A RELAÇÃO ENTRE A FÍSICA DE PARTÍCULAS E A COSMOLOGIA: UMA ABORDAGEM E PROPOSTA DIDÁTICA PARA O ENSINO MÉDIO". En Brazilian Congress. brazco, 2020. http://dx.doi.org/10.51162/brc.dev2020-00041.
Texto completoFerreira, Tiago D., João Novo, Orfeu Bertolami, Nuno A. Silva y Ariel Guerreiro. "Analogue cosmology: using techniques from nonlinear optics to study modified theories of gravity with non-minimal coupling between curvature and matter". En Nonlinear Optics and Applications XII, editado por Anatoly V. Zayats, Mario Bertolotti y Alexei M. Zheltikov. SPIE, 2021. http://dx.doi.org/10.1117/12.2592316.
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