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pro vyhledávání: '"covariant theory"'
Akademický článek
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Publikováno v:
International Journal of Modern Physics D, 2024
We study an isotropic flat FLRW-model in Scale-covariant theory of gravity $ f_{\gamma \delta}(\phi) $ \cite{Canuto:1977zz} which is explained in terms of ordinary and covariant differentiation of scalar field $ \phi $. As we know the deceleration pa
Externí odkaz:
http://arxiv.org/abs/2207.05076
Autor:
Fedosin, Sergey G.
Publikováno v:
St. Petersburg Polytechnical State University Journal. Physics and Mathematics, Vol. 14, No. 3, pp.168-184 (2021)
It is shown that the sum of stress-energy tensors of the electromagnetic and gravitational fields, the acceleration field and the pressure field inside a stationary uniform spherical body within the framework of relativistic uniform model vanishes. T
Externí odkaz:
http://arxiv.org/abs/2110.00342
Autor:
Partanen, Mikko, Tulkki, Jukka
Publikováno v:
Phys. Rev. A 104, 023510 (2021)
The relativistic theory of the time- and position-dependent energy and momentum densities of light in glasses and other low-loss dispersive media, where different wavelengths of light propagate at different phase velocities, has remained a largely un
Externí odkaz:
http://arxiv.org/abs/2105.04053
Autor:
Feng, Sze-Shiang, Mochena, Mogus
Publikováno v:
Letters. in High Energy Physics, LHEP-205,2021
As a sequel to our previous work\cite{Feng2020}, we propose in this paper a quantization scheme for Dirac field in de Sitter spacetime. Our scheme is covariant under both general transformations and Lorentz transformations. We first present a Hamilto
Externí odkaz:
http://arxiv.org/abs/2012.10703
Stochastic inflation is an effective theory describing the super-Hubble, coarse-grained, scalar fields driving inflation, by a set of Langevin equations. We previously highlighted the difficulty of deriving a theory of stochastic inflation that is in
Externí odkaz:
http://arxiv.org/abs/2008.07497
Autor:
Feng, Sze-Shiang
Publikováno v:
LHEP-162, 2020, Letters in High Energy Physics
We propose in this paper a quantization scheme for real Klein-Gordon field in de Sitter spacetime. Our scheme is generally covariant with the help of vierbein, which is necessary usually for spinor field in curved spacetime. We first present a Hamilt
Externí odkaz:
http://arxiv.org/abs/2003.09898
Publikováno v:
New Astron. 77 (2020) 101353
Taking up four model universes we study the behaviour and contribution of dark energy to the accelerated expansion of the universe, in the modified scale covariant theory of gravitation. Here, it is seen that though this modified theory may be a caus
Externí odkaz:
http://arxiv.org/abs/2001.00011
Akademický článek
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Publikováno v:
Canadian Journal of Physics. 2021, Vol. 99 Issue 12, p1082-1085. 4p.
