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Purely kinetic k-essence models have been shown in the literature to be a field theory equivalent of barotropic fluid models of dark energy or dark matter-dark energy unification. In the modeling framework where the speed of sound squared…

宇宙学与河外天体物理 · 物理学 2021-04-30 Dalibor Perkovic , Hrvoje Stefancic

The aims of this letter are three-fold: First is to show that nonlinear generalizations of electrodynamics support various types of knotted solutions in vacuum. The solutions are universal in the sense that they do not depend on the…

广义相对论与量子宇宙学 · 物理学 2016-08-24 E. Goulart

It is known that for nonlinear electrodynamics the First Law of Black Hole Mechanics holds, however the Smarr's formula for the total mass does not. In this contribution we discuss the point and determine the corresponding expressions for…

广义相对论与量子宇宙学 · 物理学 2011-07-19 Nora Breton

A solution for the Einstein gravity coupled with non linear electrodynamics is introduced in 2+1 dimensions. Especially, in the case with a non-vanishing cosmological constant, we obtain a novel black hole solution. To find fundamental…

广义相对论与量子宇宙学 · 物理学 2013-12-11 M. Kuniyasu

We present a review on Lagrangian models admitting spherically symmetric regular black holes, and cosmological bounce solutions. Non-linear electrodynamics, non-polynomial gravity, and fluid approaches are explained in details. They consist…

广义相对论与量子宇宙学 · 物理学 2018-02-28 Aimeric Colléaux , Stefano Chinaglia , Sergio Zerbini

For generic theories of nonlinear electrodynamics (NLED) we investigate the implications of (a)causality on spherically-symmetric solutions of the Einstein-NLED equations that are asymptotic to a Reissner-Nordstr\"om (RN) spacetime.…

高能物理 - 理论 · 物理学 2026-05-06 Jorge G. Russo , Paul K. Townsend

Considering both the power Maxwell invariant source and the Einstein--Gauss--Bonnet gravity, we present a new class of static solutions yields a spacetime with a longitudinal nonlinear magnetic field. These horizonless solutions have no…

高能物理 - 理论 · 物理学 2011-05-30 S. H. Hendi , S. Kordestani , S. N. D. Motlagh

We prove the existence and uniqueness of stationary spherically symmetric positive solutions for the Schr\"{o}dinger-Newton model in any space dimension $d$. Our result is based on an analysis of the corresponding system of second order…

数学物理 · 物理学 2008-02-13 Philippe Choquard , Joachim Stubbe , Marc Vuffray

Einstein's gravity in AdS space coupled to nonlinear electrodynamics (NED) with two parameters is studied. We investigate magnetically charged black holes. The metric and mass functions and their asymptotic are obtained showing that black…

综合物理 · 物理学 2024-07-23 S. I. Kruglov

Dyonic and magnetic black holes solutions with spherically symmetric configurations in general relativity are obtained. Black holes possessing electric and magnetic charges are studied where the source of the gravitational field is…

广义相对论与量子宇宙学 · 物理学 2019-11-12 S. I. Kruglov

We study the black hole solution and gravitational wave polarizations in a M-subset of the Einstein-aether theory with Lorentz invariance violated by an unit norm vector field -- the aether field $u^a$. This M-subset of Einstein-aether…

广义相对论与量子宇宙学 · 物理学 2026-03-03 Chikun Ding , Yuebing Zhou , Yu Shi , Xiangyun Fu

In this paper, we investigate the thermodynamics of Lifshitz black branes in the presence of a nonlinear massless electromagnetic field. We begin by introducing the appropriate action in grand-canonical and canonical ensembles for nonlinear…

高能物理 - 理论 · 物理学 2015-06-16 M. H. Dehghani , Ch. Shakuri , M. H. Vahidinia

We study thermodynamic properties, in particular the Temperature~(T), Angular velocity~($\Omega_h$) and Entropy~(S) of the of magnetically charged slowly rotating (with rotation parameter $a \lsim 0.10$) Kerr black-hole(BH) with the…

广义相对论与量子宇宙学 · 物理学 2026-04-30 Vinayak S. Pawar , Siba Prasad Das

We obtain an exact spherically symmetric and magnetically charged black hole solution in 4D Einstein-Gauss-Bonnet gravity coupled with nonlinear electrodynamics with the Lagrangian ${\cal L}_{NED} = -{\cal F}/(1+\sqrt{2\mid\beta{\cal…

广义相对论与量子宇宙学 · 物理学 2021-04-19 S. I. Kruglov

Non-linear interaction between the electromagnetic fields (EMF) occurs when vacuum polarization in quantum electrodynamics (QED) happens. The field of non-linear electrodynamics, which may result from this interaction, could have important…

广义相对论与量子宇宙学 · 物理学 2023-02-09 Akhil Uniyal , Reggie C. Pantig , Ali Övgün

In this paper, we investigate the thermodynamics of hyperscaling violating Lifshitz black branes in the presence of a nonlinear massless electromagnetic field. We, first, obtain analytic nonlinear charged black brane solutions with…

高能物理 - 理论 · 物理学 2015-07-08 M. H. Dehghani , A. Sheykhi , S. E. Sadati

The stability of three static and spherically symmetric black hole solutions with nonlinear electromagnetism as a source is investigated in three different ways. We show that the specific heat of all the solutions displays an infinite…

广义相对论与量子宇宙学 · 物理学 2014-02-13 Nora Bretón , Santiago Esteban Perez Bergliaffa

We derive from a microscopic Hamiltonian a set of stochastic equations of motion for a system of spinless charged particles in an electromagnetic (EM) field based on a consistent application of a dimensionful 1/c expansion of quantum…

量子物理 · 物理学 2012-06-05 C. H. Fleming , P. R. Johnson , B. L. Hu

We perform a study of the gravitating electrostatic spherically symmetric (G-ESS) solutions of Einstein field equations minimally coupled to generalized non-linear abelian gauge models in three space dimensions. These models are defined by…

高能物理 - 理论 · 物理学 2010-04-29 J. Diaz-Alonso , D. Rubiera-Garcia

In this paper, we obtain higher dimensional topological black hole solutions of Einstein-$\Lambda$ gravity in the presence of a class of nonlinear electrodynamics. First, we calculate the conserved and thermodynamic quantities of…

广义相对论与量子宇宙学 · 物理学 2015-07-13 S. H. Hendi , M. Momennia