Zobrazeno 1 - 10
of 2 630
pro vyhledávání: '"De, Cheng"'
In this paper, we focus on the generalized Einstein-Maxwell-Dilaton (EMD) gravity, including a nonminimal coupling term between the Maxwell field and scalar field. We construct charged lifshitz black holes with scalar hair of EMD gravity in the prese
Externí odkaz:
http://arxiv.org/abs/2410.16877
In this paper, we explore the quasinormal modes (QNMs) of a black hole surrounded by a fluid of strings within the framework of Rastall gravity. We analyze the behavior of scalar, electromagnetic, and gravitational perturbations, focusing on the infl
Externí odkaz:
http://arxiv.org/abs/2409.16891
We study the spontaneous scalarization of Bardeen black holes, whose tachyonic instability triggers the formation of scalarized charged black holes (SCBHs). In this case, we find infinite ($n=0,1,2,\cdots$) branches of SCBHs with magnetic charge $g$.
Externí odkaz:
http://arxiv.org/abs/2409.11669
Publikováno v:
Phys.Rev.D 110 (2024) 6, 064007
In this paper, we focus on massive Einstein-dilaton gravity including the coupling of dilaton scalar field to massive graviton terms, and then derive static and spherically symmetric solutions of charged dilatonic black holes in four dimensional spac
Externí odkaz:
http://arxiv.org/abs/2409.04485
Publikováno v:
Phys. Rev. D 110, 104039 (2024)
In the present work, we investigate the gravitational lensing effects of two quantum-modified black hole models recently proposed in effective quantum gravity. The light deflection angles are calculated for both the weak-field and strong-field limits
Externí odkaz:
http://arxiv.org/abs/2408.11603
Recently, an interesting \textit{doppelg\"ange} black hole solution is obtained in the string-inspired Euler-Heisenberg theory, where the black holes have the same radii but share different charges. We found, however, they possess different ISCOs and
Externí odkaz:
http://arxiv.org/abs/2407.06562
In this paper, we propose a fully nonlinear mechanism for obtaining scalarized black holes in Einstein-scalar-Gauss-Bonnet (EsGB) gravity which is beyond the spontaneous scalarization. Introducing three coupling functions $f(\varphi)$ satisfying $f''
Externí odkaz:
http://arxiv.org/abs/2404.19521
In this work, we discuss the generalized Einstein-Maxwell-Dilaton gravity theory with a nonminimal coupling between the Maxwell field and scalar field. Considering different geometric properties of black hole horizon structure, the charged dilaton Li
Externí odkaz:
http://arxiv.org/abs/2404.19423
Publikováno v:
Chinese Physics C Vol. 48, No. 7 (2024) 075104
Considering the nonminimal coupling of the dilaton field to the massive graviton field in Maxwell-dilaton-massive gravity, we obtain a class of analytical solutions of charged black holes, which are neither asymptotically flat nor (A)dS. The calculat
Externí odkaz:
http://arxiv.org/abs/2403.13328
We investigate the tachyonic instability of Kerr-Newman (KN) black hole with a rotation parameter $a$ in the Einstein-Chern-Simons-scalar theory coupled with a quadratic massive scalar field. This instability analysis corresponds to exploring the ons
Externí odkaz:
http://arxiv.org/abs/2401.00144