Zobrazeno 1 - 10
of 2 689
pro vyhledávání: '"Xi, Jing"'
We find that a \textit{slowly} rotating axion-modified black hole resulting from the backreaction of an axion field on a rotating Kerr black hole can have a \textit{D-shaped} shadow as that for a \textit{highly} counter-rotating Kerr black hole. This
Externí odkaz:
http://arxiv.org/abs/2406.11932
Publikováno v:
Eur. Phys. J. C (2024) 84: 305
We investigate the shadow and optical appearance of the hairy Reissner-Nordstr\"{o}m (RN) black hole illuminated by two toy models of static accretion. The hairy RN black hole was constructed in the gravitation decoupling approach to describe the def
Externí odkaz:
http://arxiv.org/abs/2401.05634
Publikováno v:
Phys.Rev.D 108 (2023) 12, 124077
We construct novel scalarized black hole (BH) solutions beyond the general relativity (GR) framework. These scalarized BH solutions are extended from the Schwarzschild one and the non-Schwarzschild one in the pure Einstein-Weyl gravity. By studying t
Externí odkaz:
http://arxiv.org/abs/2307.13440
Publikováno v:
Physical Review D 108, 064013 (2023)
A hairy Schwarzschild black hole describes the deformation of Schwarzschild black hole due to including additional sources. It is found that depending on the hairy parameters, the photons' configurations around this black hole can be classified into
Externí odkaz:
http://arxiv.org/abs/2306.10459
Publikováno v:
Phys.Lett.B 841 (2023) 137940
Dynamical Chern-Simons (dCS) gravity has been attracting plenty of attentions due to the fact that it is a parity-violating modified theory of gravity that corresponds to a well-posed effective field theory in weak coupling approximation. In particul
Externí odkaz:
http://arxiv.org/abs/2305.04210
Publikováno v:
Phys. Rev. D 107, 124052 (2023)
We analyze the light rays around a static hairy black hole in Horndeski gravity with the use of ray-tracing procedure. We find that a stronger Horndeski hairy parameter corresponds to larger photon sphere as well as critical impact parameter, and wid
Externí odkaz:
http://arxiv.org/abs/2304.10015
Publikováno v:
Eur.Phys.J.C 83 (2023) 8, 748
We have constructed a holographic superfluid with gauge-axion coupling. Depending on whether the coupling is positive or negative, the system displays metallic or insulating behavior in its normal state. A significant feature of the system is the app
Externí odkaz:
http://arxiv.org/abs/2212.01986
Publikováno v:
Eur.Phys.J.C 83 (2023) 4, 316
The transport features of the holographic two-currents model are investigated in the Horndeski gravity framework. This system displays metallic or insulating characteristics depending on whether the Horndeski coupling parameter $\gamma$ is negative o
Externí odkaz:
http://arxiv.org/abs/2211.07074
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 3, Pp 1-14 (2024)
Abstract In this paper, we investigate the shadow and optical appearance of the hairy Reissner–Nordström (RN) black hole illuminated by two toy models of static accretion. The hairy RN black hole was constructed in the gravitation decoupling appro
Externí odkaz:
https://doaj.org/article/a75d9740ab314a5897ad177bb11a3c58
Equation of state (EOS) for bcc tungsten at 300 K (or 3000 K) up to 1000 GPa (or 300 GPa) was predicted for the first time by solving the partition function via a direct integral approach (DIA) with ab initio calculations of the atoms' interactions.
Externí odkaz:
http://arxiv.org/abs/2210.16736