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We construct a new class of higher dimensional black hole solutions of $f(R)$ theory coupled to a nonlinear Maxwell field. In deriving these solutions the traceless property of the energy-momentum tensor of the matter filed plays a crucial…

高能物理 - 理论 · 物理学 2012-09-14 Ahmad Sheykhi

In this work, we study the possibility of generalizing solutions of regular black holes with an electric charge, constructed in general relativity, for the $f(G)$ theory, where $G$ is the Gauss-Bonnet invariant. This type of solution arises…

广义相对论与量子宇宙学 · 物理学 2018-08-20 Marcos V. de S. Silva , Manuel E. Rodrigues

We construct charged asymptotically flat black hole solutions in Einstein-Maxwell-Weyl(EMW) gravity. These solutions can be interpreted as generalizations of two different groups: Schwarzschild black hole (SBH) and non-Schwarzschild black…

广义相对论与量子宇宙学 · 物理学 2020-03-18 Chao Wu , De-Cheng Zou , Ming Zhang

Inspired by the BTZ formalism, we discuss the Maxwell-$f(T)$ gravity in (2+1)-dimensions. The main task is to derive exact solutions for a special form of $f(T)=T+\epsilon T^2$, with $T$ being the torsion scalar of…

广义相对论与量子宇宙学 · 物理学 2018-05-23 G. G. L. Nashed , S. Capozziello

The Planck length and Planck energy should be taken as invariant scales are in agreement with various theories of quantum gravity. In this scenario, the original general relativity can be changed to the so-called gravity's rainbow which…

综合物理 · 物理学 2016-10-26 Zhong-Wen Feng , Shu-Zheng Yang , Hui-Ling Li , Xiao-Tao Zu

We build an infinite class of exact axisymmetric solutions of a metric-affine gravity theory, namely, Eddington-inspired Born-Infeld gravity, coupled to an anisotropic fluid as a matter source. The solution-generating method employed is not…

广义相对论与量子宇宙学 · 物理学 2022-03-30 Victor I. Afonso , Gerardo Mora-Pérez , Gonzalo J. Olmo , Emanuele Orazi , Diego Rubiera-Garcia

We obtain an infinite number of exact static, Ricci-flat spherically symmetric vacuum solutions for a class of f(R) theories of gravity. We analytically derive two exact vacuum black-hole solutions for the same class of f(R) theories. The…

广义相对论与量子宇宙学 · 物理学 2020-10-02 Semin Xavier , Jose Mathew , S. Shankaranarayanan

In this work, we study the three-dimensional AdS gravitational vacuum stars (gravastars) in the context of gravity's rainbow theory. Then we extend it by adding the Maxwell electromagnetic field. We compute the physical features of…

广义相对论与量子宇宙学 · 物理学 2023-02-17 H. Barzegar , M. Bigdeli , G. H. Bordbar , B. Eslam Panah

To see how the gravity's rainbow works for black hole complementary, we evaluate the required energy for duplication of information in the context of black hole complementarity by calculating the critical value of the rainbow parameter in…

广义相对论与量子宇宙学 · 物理学 2015-05-07 Yongwan Gim , Wontae Kim

In this paper, we investigate the thermodynamics of higher-dimensional $f(R)$ black holes in the extended phase space. Both the analytic expressions and numerical results for the possible critical physical quantities are obtained. It is…

广义相对论与量子宇宙学 · 物理学 2016-11-03 Jie-Xiong Mo , Gu-Qiang Li , Xiao-Bao Xu

Inspired by the Maxwell symmetry generalization of general relativity (Maxwell gravity), we have constructed the Maxwell extension of $f(R)$ gravity. We found that the semi-simple extension of the Poincare symmetry allows us to introduce…

高能物理 - 理论 · 物理学 2023-02-01 Oktay Cebecioğlu , Ahmet Saban , Salih Kibaroğlu

We present a gauge formulation of the special affine algebra extended to include an antisymmetric tensorial generator belonging to the tensor representation of the special linear group. We then obtain a Maxwell modified metric affine…

高能物理 - 理论 · 物理学 2021-10-27 Oktay Cebecioğlu , Salih Kibaroğlu

In this work, we investigate black hole (BH) physics in the context of gravity rainbow. We investigate this through rainbow functions that have been proposed by Amelino-Camelia, et el. in [arXiv:0806.0339, hep-th/9605211]. This modification…

高能物理 - 理论 · 物理学 2014-05-26 Ahmed Farag Ali

New solutions are derived in the $2+1$ gravity which is coupled to $|{\cal F}|^k$ type non-linear electric field in Maxwell Power theory with dilaton field. We obtain consistent solutions in general $k$ case. We also investigate the…

广义相对论与量子宇宙学 · 物理学 2015-01-28 Masashi Kuniyasu

Modified gravity is one of the most promising candidates for explaining the current accelerating expansion of the Universe, and even its unification with the inflationary epoch. Nevertheless, the wide range of models capable to explain the…

广义相对论与量子宇宙学 · 物理学 2015-06-03 Álvaro de la Cruz-Dombriz , Diego Sáez-Gómez

We systematically study the field equations of $f(\mathbb Q)$ gravity for spherically symmetric and stationary metric-affine spacetimes. Such spacetimes are described by a metric as well as a flat and torsionless affine connection. In the…

广义相对论与量子宇宙学 · 物理学 2022-02-02 Fabio D'Ambrosio , Shaun D. B. Fell , Lavinia Heisenberg , Simon Kuhn

In this article, the implementation of black-bounce solutions in $f(R)$ theories is investigated. Black-bounce solutions are regular configurations of the static spherically symmetric space-time, containing both black holes and wormholes…

广义相对论与量子宇宙学 · 物理学 2023-10-03 Júlio C. Fabris , Ednaldo L. B. Junior , Manuel E. Rodrigues

The static vacuum spherically symmetric solutions in massive gravity are obtained both analytically and numerically. The solutions depend on two parameters (integration constants): the mass M (or, equivalently, the Schwarzschild radius),…

广义相对论与量子宇宙学 · 物理学 2011-06-10 Michael V. Bebronne , Peter G. Tinyakov

We compute the Zero Point Energy in a spherically symmetric background distorted at high energy as predicted by \textit{Gravity's Rainbow}. In this context we setup a Sturm-Liouville problem with the cosmological constant considered as the…

广义相对论与量子宇宙学 · 物理学 2011-04-22 Remo Garattini , Gianluca Mandanici

In this work, we construct traversable wormhole geometries in the context of f(R) modified theories of gravity. We impose that the matter threading the wormhole satisfies the energy conditions, so that it is the effective stress-energy…

广义相对论与量子宇宙学 · 物理学 2009-11-12 Francisco S. N. Lobo , Miguel A. Oliveira