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pro vyhledávání: '"Shojai, Fatimah"'
In this paper we study the Oppenheimer-Snyder (OS) gravitational collapse in the general framework of scale-dependent gravity. We explore the collapse in spherically symmetric solutions suggested both by asymptotically safe gravity (positive $\om$-pa
Externí odkaz:
http://arxiv.org/abs/2410.15904
Autor:
Saadati, Reza, Shojai, Fatimah
Publikováno v:
Class. Quantum Grav. 41 015032, 2024
We study the circular motion of massive and massless particles in a recently proposed quantum-corrected Schwarzschild black hole in loop quantum gravity. This solution is supposed to introduce small but non-zero quantum corrections in the low curvatu
Externí odkaz:
http://arxiv.org/abs/2312.12087
In the current framework of Einstein's equations in general relativity (GR), gravity is described by the spacetime curvature. However, there are other descriptions where the origin of gravity can be understood through torsion and non-metricity $Q$. I
Externí odkaz:
http://arxiv.org/abs/2212.00312
We generate new spherical and time-dependent solutions of viable Horndeski gravity by disforming a solution of the Einstein equations with scalar field source and positive cosmological constant. They describe dynamical objects embedded in asymptotica
Externí odkaz:
http://arxiv.org/abs/2207.07060
Publikováno v:
Phys. Let. B, 770, 43, 2017
We have found some analytical cosmological solutions to MOdified Gravity (MOG). These solutions describe different evolutionary epochs of an isotropic and homogeneous universe. During each epoch, the evolution of cosmological perturbation is studied
Externí odkaz:
http://arxiv.org/abs/1704.04161
Autor:
Shojai, Fatimah, Sanati, Mahsa
In this paper, considering the energy conditions we shall show that some of the energy conditions are violated in the vicinity of future singularities with the scale factor suggested by Dabrowski - Marosek.
Comment: I withdraw this paper since m
Comment: I withdraw this paper since m
Externí odkaz:
http://arxiv.org/abs/1607.06695
Autor:
Roshan, Mahmood, Shojai, Fatimah
Publikováno v:
Physical Review D 94, 044002 (2016)
A new covariant generalization of Einstein's general relativity is developed which allows the existence of a term proportional to $T_{\alpha\beta}T^{\alpha\beta}$ in the action functional of the theory ($T_{\alpha\beta}$ is the energy-momentum tensor
Externí odkaz:
http://arxiv.org/abs/1607.06049
Akademický článek
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Autor:
Shojai, Ali, Shojai, Fatimah
We have found some new exact static spherically symmetric interior solutions of metric $f(R)$ gravitational theories describing the equilibrium configuration of a star. Then the solution is matched to the exterior solution and thus gives a complete d
Externí odkaz:
http://arxiv.org/abs/1109.2190
Autor:
Shojai, Fatimah, Shojai, Ali
Brans--Dicke scalar--tensor theory provides a conformally coupling of the scalar field with gravity in Einstein's frame. This model is equivalent to an interacting quintessence in which dark matter is coupled to dark energy. This provides a natural m
Externí odkaz:
http://arxiv.org/abs/1109.2189