Готові списки джерел за темами / Gravitational essence

Добірка наукової літератури з теми "Gravitational essence"

Автор: Grafiati
Опубліковано: 10 грудня 2022
Оновлено: 28 січня 2023

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Статті в журналах з теми "Gravitational essence"

1

Cooperstock, F. I. "The essence of gravitational waves and energy." International Journal of Modern Physics D 24, no. 12 (October 2015): 1543005. http://dx.doi.org/10.1142/s0218271815430051.

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In this paper, we discuss the essential element of gravity as spacetime curvature and a gravitational wave as the propagation of spacetime curvature. Electromagnetic waves are necessarily localized carriers of spacetime curvature and hence are also gravitational waves. Thus, electromagnetic waves have dual character and detection of gravitational waves is the routine of our everyday experience. Regarding the transferring energy from a gravitational wave to an apparatus, both Rosen and Bondi waves lack the essential characteristic of inducing a gradient of acceleration between detector elements. We discuss our simple invariant energy expression for general relativity and its extension. If the cosmological term is present in the field equations, its universal presence characteristic implies that gravitational waves would necessarily have an energy aspect in their propagation in every case.
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2

Aldrovandi, R., J. G. Pereira, and K. H. Vu. "The Nonlinear Essence of Gravitational Waves." Foundations of Physics 37, no. 10 (September 11, 2007): 1503–17. http://dx.doi.org/10.1007/s10701-007-9180-2.

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3

Dmitriev, Alexander L. "Gravitational Induction as Analog of Amplification of Light in Active Medium." Applied Physics Research 9, no. 5 (September 10, 2017): 87. http://dx.doi.org/10.5539/apr.v9n5p87.

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Анотація:
Concept of gravitational induction the essence of which is in the change of gravitation force affecting test mass due to influence of gravitational field on this mass by other masses has been considered. Evaluation of coefficient of induced increase of the gravity in the titanium sample has been shown based on the measurement of weight of nonmagnetic metal rod by its vertical and horizontal orientation.
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4

Haug, Espen Gaarder. "Gravity Without Newton’s Gravitational Constant and No Knowledge of the Mass Size." European Journal of Applied Physics 4, no. 6 (November 17, 2022): 4–10. http://dx.doi.org/10.24018/ejphysics.2022.4.6.223.

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In this paper, we show that the Schwarzschild radius can be extracted easily from any gravitationally-linked phenomena without having knowledge of Newton’s gravitational constant or the mass size of the gravitational object. Further, the Schwarzschild radius can be used to predict a long series of gravity phenomena accurately, again without knowledge of Newton’s gravitational constant and also without knowledge of the size of the mass, although this may seem surprising at first. Hidden within the Schwarzschild radius are the more fundamental mass of the gravitational object, the Planck length, which we will assert contain the secret essence related to gravity, in addition to the speed of light (the speed of gravity). This seems to support that gravity is quantized, even at the cosmological scale, and this quantization is directly linked to the Planck units. This also supports our view that Newton’s gravitational constant is a universal composite constant of the form G = l2pc3/h , rather than relying on the Planck units as a function of G. This does not mean that Newton’s gravitational constant is not a universal constant, but rather that it is a composite universal constant, which depends on the Planck length, the speed of light, and the Planck constant. This is, to our knowledge, the first paper1 that shows how a long series of major gravity predictions and measurements can be completed without any knowledge of the mass size of the object, or Newton’s gravitational constant. At minimum, we think it provides an interesting new angle for evaluating existing theories of gravitation.
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5

CHIMENTO, LUIS P., and ALEXANDER FEINSTEIN. "POWER-LOW EXPANSION IN k-ESSENCE COSMOLOGY." Modern Physics Letters A 19, no. 10 (March 28, 2004): 761–68. http://dx.doi.org/10.1142/s0217732304013507.

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Анотація:
We study spatially flat isotropic universes driven by k-essence. It is shown that Friedmann and k-field equations may be analytically integrated for arbitrary k-field potentials during evolution with a constant baryotropic index. It follows that there is an infinite number of dynamically different k-theories with equivalent kinematics of the gravitational field. We show that there is a large "window" of stable solutions, and that the dust-like behavior separates stable from unstable expansion. Restricting to the family of power law solutions, it is argued that the linear scalar field model, with constant function F, is isomorphic to a model with divergent speed of sound and this makes them less suitable for cosmological modeling than the nonlinear k-field solutions we find in this paper.
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6

Razina, Olga, Pyotr Tsyba, Bekdaulet Meirbekov, and Ratbay Myrzakulov. "Cosmological Einstein–Maxwell model with g-essence." International Journal of Modern Physics D 28, no. 10 (July 2019): 1950126. http://dx.doi.org/10.1142/s0218271819501268.

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In this paper, we study the model of the late universe with the homogeneous, isotropic and flat Friedmann–Robertson–Walker metric, where the source of the gravitational field is based on the fermion and boson fields, with the Maxwell term [Formula: see text] in four dimensions. The actuation of the Maxwell term for the Einstein gravity makes it possible to find new approaches to solve the problem of the observed accelerated expansion of the universe. Energy conditions have been obtained and studied. These conditions impose very simple and model-independent restrictions on the behavior of energy density and pressure since they do not require a specific equation-of-state of matter. To consider the model, the energy conditions NEC, WEC, DEC are realized, and the SEC condition is violated. The boson and fermion fields are responsible for the accelerated regime at early times, but since the total pressure tends toward zero for large times, a transition to a decelerated regime occurs. Maxwell field is crucial only in the early times.
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7

Сhaban, Vasil. "IMPACT OF THE INTERACTION OF MOVING PLANETS ON THEIR ORBITS." Measuring Equipment and Metrology 83, no. 2 (2022): 11–16. http://dx.doi.org/10.23939/istcmtm2022.02.011.

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The research raises the problem of determining and measuring the interaction of planets on the trajectory of their orbits around the Sun. Its solution becomes possible only based on an adequate mathematical model. For this purpose, Newton's law of universal gravitation was adapted to the case of moving masses in a wide range of velocities in flat Euclidean space and physical time. The finite speed of propagating the gravitational field is considered. Differential equations of planets’ motion are obtained. Transients in the three-mass system of a star and two planets close to the Sun-Mercury-Venus system are simulated. To reveal deeply the essence of physical interaction, a hyperbolized transition process is simulated under artificially close moving masses.
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8

Anđelković, Bojan. "From Retrogradism to Post-Gravitational Art and Back." Maska 31, no. 177 (June 1, 2016): 51–57. http://dx.doi.org/10.1386/maska.31.177-178.51_1.

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Dragan Živadinov creates conceptual total works of art that are procedural and processual in nature. At the centre of interest of his art is the spectator, or the gaze, since the essence of this theatre is produced by a constant turning of the perspective. The project(ile) Noordung 1995-2045 has been conceived as a 50-year project to show the instability of the relation between body and technology. It stages itself and thus repeats the drama of the cosmos. A theatre of repetition that again finds the primary (ritual) sense of theatre.
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9

Gonçalves, J. S., та A. F. Santos. "A study on causality in f(R,ϕ,X) theory". International Journal of Modern Physics A 36, № 02 (20 січня 2021): 2150009. http://dx.doi.org/10.1142/s0217751x21500093.

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Анотація:
The [Formula: see text]-essence modified [Formula: see text] gravity model, i.e. [Formula: see text] theory is studied. The question of violation of causality, in the framework of Gödel-type universes, is investigated in this gravitational model. Causal and noncausal solutions are allowed. A critical radius for noncausal solution is calculated. It is shown that the violation of causality depends on the content of matter.
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10

SHARIFIAN, MOSTAFA, and AHMAD SHEYKHI. "SCALAR FIELDS RECONSTRUCTION OF VISCOUS GDE WITH VARYING G." International Journal of Modern Physics D 23, no. 01 (January 2014): 1450002. http://dx.doi.org/10.1142/s0218271814500023.

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Анотація:
In this paper, we first study the effects of the varying gravitational constant G as well as the bulk viscosity on the evolution of the Universe field with pressureless dark matter and ghost dark energy (GDE). Then, we establish a correspondence between viscous GDE and scalar field models of dark energy including quintessence, tachyon, K-essence and dilaton energy density in a flat FRW universe. This correspondence allows us to reconstruct the potential and dynamics of the scalar fields according to the evolution of interacting viscous GDE with varying G.
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Книги з теми "Gravitational essence"

1

Fendler, Augustus. Mechanism of the Universe, and Its Primary Effort-Exerting Powers : The Nature of Forces and the Constitution of Matter; with Remarks on the Essence and Attributes of the All-Intelligent: Twenty-Four Propositions on Gravitation Illustrated by Five Li. Creative Media Partners, LLC, 2018.

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Тези доповідей конференцій з теми "Gravitational essence"

1

Estevez-Delgado, J., T. Zannias, Alfredo Herrera-Aguilar, Francisco S. Guzmán Murillo, Ulises Nucamendi Gómez, and Israel Quiros. "On Weyl wormholes supported by massless K-essence." In GRAVITATION AND COSMOLOGY: Proceedings of the Third International Meeting on Gravitation and Cosmology. AIP, 2008. http://dx.doi.org/10.1063/1.3058583.

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2

Cruz, Norman, Pedro F. González-Díaz, Alberto Rozas-Fernández, Guillermo Sánchez, Kerstin E. Kunze, Marc Mars, and Miguel Angel Vázquez-Mozo. "Holographic kinetic k-essence cosmologies." In PHYSICS AND MATHEMATICS OF GRAVITATION: Proceedings of the Spanish Relativity Meeting 2008. AIP, 2009. http://dx.doi.org/10.1063/1.3141273.

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3

De-Santiago, Josue, and Jorge L. Cervantes-Cota. "On the dynamics of unified k-essence cosmologies." In IX WORKSHOP OF THE GRAVITATION AND MATHEMATICAL PHYSICS DIVISION OF THE MEXICAN PHYSICAL SOCIETY. AIP, 2012. http://dx.doi.org/10.1063/1.4748535.

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4

Cordero, Rubén, Eduardo L. González, Alfonso Queijeiro, Luis Arturo Ureña-López, Hugo Aurelio Morales-Técotl, Román Linares-Romero, Elí Santos-Rodríguez, and Sendic Estrada-Jiménez. "K-essence with a Polynomial Equation of State." In VIII WORKSHOP OF THE GRAVITATION AND MATHEMATICAL PHYSICS DIVISION OF THE MEXICAN PHYSICAL SOCIETY. AIP, 2011. http://dx.doi.org/10.1063/1.3647545.

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