Zobrazeno 1 - 10
of 57 839
pro vyhledávání: '"Theory of gravity"'
Publikováno v:
International Journal of Geometric Methods in Modern Physics, Vol. 21, No. 10, 2440033 (2024)
In the present research article, we have studied the flat FRW space time with domain wall and holographic dark energy in the context of $f(Q)$ theory of gravity. The exact solutions of the field equations are obtained using two different forms of var
Externí odkaz:
http://arxiv.org/abs/2410.07657
Autor:
Pal, Suman, Chaudhuri, Gargi
In this study, we investigate strange quark stars within the framework of modified $f(R,T)$ gravity, where $R$ represents the Ricci scalar and $T$ denotes the trace of the energy-momentum tensor, specifically defined as $ f(R,T) = R + 2\chi T $. The
Externí odkaz:
http://arxiv.org/abs/2410.04220
Recently, theoretical studies on the bumblebee gravity model, a nonminimally-coupled vector-tensor theory that violates the Lorentz symmetry, have flourished, with a simultaneous increase in the utilization of observations to impose constraints. The
Externí odkaz:
http://arxiv.org/abs/2409.04805
We investigate anisotropic and homogeneous cosmological models in the scalar-tensor theory of gravity with non-minimal kinetic coupling of a scalar field to the curvature given by the function $\eta\cdot(\phi/2)\cdot G_{\mu\nu}\,\nabla^\mu \nabla^\nu
Externí odkaz:
http://arxiv.org/abs/2407.03683
von Neumann algebras have been playing an increasingly important role in the context of gauge theories and gravity. The crossed product presents a natural method for implementing constraints through the commutation theorem, rendering it a useful tool
Externí odkaz:
http://arxiv.org/abs/2407.01695
Autor:
Gogoi, Dhruba Jyoti
Publikováno v:
Phys.Dark Univ. 45 (2024) 101535
In this work, the quasinormal modes of a $5$-D black hole in Einstein Gauss-Bonnet Bumblebee theory of gravity have been investigated with the help of the Pad\'e averaged higher order WKB approximation method and the validity of Hod's conjecture has
Externí odkaz:
http://arxiv.org/abs/2405.02455
Autor:
Touati, Abdellah, Slimane, Zaim
In this paper, we study the stability of geodesic motion for both massive and massless particles using Lyapunov exponents in the non-commutative (NC) Schwarzschild black hole (SBH) via the gauge theory of gravity. As a first step, we investigate the
Externí odkaz:
http://arxiv.org/abs/2405.01743
Autor:
Novello, Mario, Antunes, Vicente
We present solutions corresponding to rotational configurations in the recently proposed Geometric Scalar Gravity (GSG) theory. The solutions obtained here have the important property that the associated closed time-like curves are always restricted
Externí odkaz:
http://arxiv.org/abs/2407.09663
Autor:
Sinha, Meghanil, Singh, S. Surendra
The Gravastar ( or the Gravitational Vacuum Star ) is a very serious alternatives proposed to the principle of the Black Hole, the model of which was originally developed by Mazur and Mottola. A Gravastar is an astronomically hypothetically condensed
Externí odkaz:
http://arxiv.org/abs/2407.09579
Autor:
Tripathy, Pabitra
As an alternative to the "no hair conjecture," the "no short hair conjecture" for hairy black holes was established earlier. This theorem stipulates that hair must be present above 3/2 of the event horizon radius for a hairy black hole. It is assumed
Externí odkaz:
http://arxiv.org/abs/2406.13690