Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Parbati Sahoo"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 12, Pp 1-9 (2021)
Abstract The static isotropic gravitational field equation, governing the geometry and dynamics of stellar structure, is considered in Einstein–Gauss–Bonnet (EGB) gravity. This is a nonlinear Abelian differential equation which generalizes the si
Externí odkaz:
https://doaj.org/article/68b9adf0757d4727be46b4edc4cbf2f5
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 78, Iss 9, Pp 1-10 (2018)
Abstract This article presents cosmological models that arise in a subclass of $$f(R,T)=f(R)+f(T)$$ f(R,T)=f(R)+f(T) gravity models, with different f(R) functions and fixed T-dependence. That is, the gravitational lagrangian is considered as $$f(R,T)
Externí odkaz:
https://doaj.org/article/601f45547b98452fa3ad851e5b2b74bf
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 78, Iss 1, Pp 1-7 (2018)
Abstract We propose, as a novelty in the literature, the modeling of wormholes within a particular case of f(R, T) gravity, namely $$f(R,T)=R+\alpha R^{2}+\lambda T$$ f(R,T)=R+αR2+λT , with R and T being the Ricci scalar and trace of the energy-mom
Externí odkaz:
https://doaj.org/article/e040f8c6fd2547b59ef847854176fdb8
Publikováno v:
Canadian Journal of Physics. 98:1015-1022
We construct Locally Rotationally Symmetric (LRS) Bianchi type-I cosmological model in $f(R,T)$ theory of gravity when the source of gravitation is the mixture of barotropic fluid and dark energy (DE) by employing a time varying deceleration paramete
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0787d9eed30290d091c595908629ff6
https://doi.org/10.1139/cjp-2019-0494
https://doi.org/10.1139/cjp-2019-0494
In the present paper we examine a projectively flat spacetime solution of $F(R)$-gravity theory. It is seen that once we deploy projective flatness in the geometry of the spacetime, the matter field has constant energy density and isotropic pressure.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc67edc36ededfd0a70e64c46bc975f9
http://arxiv.org/abs/2111.09483
http://arxiv.org/abs/2111.09483
Publikováno v:
Communications in Theoretical Physics. 74:125402
We study the periodic cosmic transit behavior of accelerated universe in the framework of symmetric teleparallelism. The exact solution of field equations is obtained by employing a well known deceleration parameter (DP) called periodic varying decel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5439c2b93c1fdaef1dae51c3e74c4a89
https://doi.org/10.1088/1572-9494/ac8d8a
https://doi.org/10.1088/1572-9494/ac8d8a
Publikováno v:
International Journal of Modern Physics D. 30
We present a traversable wormhole solution using the traceless $f(R,T)$ theory of gravity. In the $f(R,T)$ gravity, the Ricci scalar $R$ in the Einstein-Hilbert action is replaced by a function of $R$ and trace of the energy momentum tensor $T$. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad5fa345ca0bb181b3db596e8e49c004
https://doi.org/10.1142/s0218271821501005
https://doi.org/10.1142/s0218271821501005
Publikováno v:
The European Physical Journal Plus. 136
Symmetric Teleparallel Gravity is an exceptional theory of gravity that is consistent with the vanishing affine connection. This theory is an alternative and a simpler geometrical formulation of general relativity, where the non-metricity $Q$ drives
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0bd5bbda8175a03a0d2e6d61158b42f7
https://doi.org/10.1140/epjp/s13360-021-01749-6
https://doi.org/10.1140/epjp/s13360-021-01749-6
The present manuscript presents modeling of matter bounce in the framework of $f(R,T)$ gravity where $f(R,T) = R + 2 \lambda T$. We start by defining a parametrization of scale factor which is non-vanishing. The geometrical parameters such as the Hub
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e7df268b6f423d36661e42cc411b92ad
http://arxiv.org/abs/1907.08682
http://arxiv.org/abs/1907.08682
In the present article we propose a new hybrid shape function for wormhole (WH)s in the modified $f(R,T)$ gravity. The proposed shape function satisfied the conditions of WH geometry. Geometrical behavior of WH solutions are discussed in both anisotr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9fd459744a644f66e346f866e8f032fa