Following the holographic principle,which suggests that the energy density of dark energy may be inversely proportional to the area of the event horizon of the Universe,we propose a new energy density of dark energy t...
Supported by LPPM UNPAR under contract no.III/LPPM/2022-02/79-P。
We show that the study of the hidden conformal symmetry that is associated with the Kerr/CFT correspondence can also apply to the cosmological horizon in the Kerr-Newman-Taub-NUT-de Sitter spacetime.This symmetry allo...
Supported in part by Hebei Provincial Natural Science Foundation of China(A2014201068)。
We investigate whether the new horizon first law still holds in f(R,R^μνRμν)theory.For this complicated theory,we first determine the entropy of a black hole by using the Wald method,and then derive the energy of ...
Supported by the NSFC(11647064)and Nanhu Scholars Program for Young Scholars of XYNU
In a previous publication,we claimed that a black hole can be considered as a topological insulator.A direct consequence of this claim is that their symmetries should be related.In this paper,we give a representation ...
Supported by the Serbian Science Foundation(171031)
We study the near horizon geometry of both static and stationary extremal Oliva Tempo Troncoso(OTT)black holes. For each of these cases, a set of consistent asymptotic conditions is introduced. The canonical generator...
Supported by National Natural Science Foundation of China(11690022);the Strategic Priority Research Program of the Chinese Academy of Sciences Multi-waveband Gravitational Wave Universe(XDB23040000);Nanhu Scholars Program for Young Scholars of XYNU
In a three-dimensional spacetime with ~egative cosmological constant, general relativity can be written as two copies of SO(2,1) Chern-Simons theory. On a manifold with a boundary, the Chern-Simons theory induces a ...