Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Joey Latta"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 12, Pp 1-41 (2020)
Abstract The asymptotic properties of conformally static metrics in Einstein–æther theory with a perfect fluid source and a scalar field are analyzed. In case of perfect fluid, some relativistic solutions are recovered such as: Minkowski spacetime
Externí odkaz:
https://doaj.org/article/84b091b921364d868a73847b0bed6e84
Publikováno v:
European Physical Journal
European Physical Journal C: Particles and Fields, Vol 80, Iss 12, Pp 1-41 (2020)
European Physical Journal C: Particles and Fields, Vol 80, Iss 12, Pp 1-41 (2020)
The asymptotic properties of conformally static metrics in Einstein-aether theory with a perfect fluid source and a scalar field are analyzed. In case of perfect fluid, some relativistic solutions are recovered such as: Minkowski spacetime, the Kasne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b89b8487d85bb5c964d2016307aa59d
https://doi.org/10.1140/epjc/s10052-020-08731-z
https://doi.org/10.1140/epjc/s10052-020-08731-z
Publikováno v:
Physical Review D. 88
We use cosmological perturbation theory to study the backreaction effects of a self-consistent and well-defined cosmological averaging on the dynamics and the evolution of the Universe. Working with a perturbed Friedman-Lema\^{\i}tre-Robertson-Walker
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::701df2b2ca7a914f6b9186e307a6b3d3
https://doi.org/10.1103/physrevd.88.083523
https://doi.org/10.1103/physrevd.88.083523
The cosmological backreaction from perturbations is clearly gauge-dependent, and obviously depends on the choice of averaged Hubble rate. We consider two common choices of Hubble rate and advocate the use of comoving volume-preserving gauges. We high
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c8322e604877447e1100e38522919801
http://arxiv.org/abs/1211.0802
http://arxiv.org/abs/1211.0802
The question of the averaging of inhomogeneous spacetimes in cosmology is important for the correct interpretation of cosmological data. In this paper we suggest a conceptually simpler approach to averaging in cosmology based on the averaging of scal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0989414ec15b04f94274134c44577dcf
Publikováno v:
Journal of Cosmology and Astroparticle Physics
We investigate spherically symmetric cosmological models in Einstein-aether theory with a tilted (non-comoving) perfect fluid source. We use a 1+3 frame formalism and adopt the comoving aether gauge to derive the evolution equations, which form a wel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1406b008c2f2094c089f9460eb44e0fc
https://doi.org/10.1088/1475-7516/2015/12/010
https://doi.org/10.1088/1475-7516/2015/12/010