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Project supported by the National Natural Science Foundation of China(Grant Nos.11504027 and 11847011)
We propose a regular spherically symmetric spacetime solution with three parameters in Einstein gravity coupled to nonlinear electrodynamics(NED), which describes the NED black hole with electric charge. It is found t...
Project supported by the National Natural Science Foundation of China(Grant Nos.11273009 and 11303006)
We show that the global monopole spacetime is one of the exact solutions of the Einstein equations by treating the matter field as a non-linear sigma model, without the weak field approximation applied in the original...
supported by the National Natural Science Foundation of China(Grant No.10873004);the State Key Development Program for Basic Research Program of China(Grant No.2010CB832803);the Program for Changjiang Scholars and Innovative Research Team in University(Grant No.IRT0964)
We study circular time-like geodesics in the spacetime of a black hole including global monopole. We show that when the range of parameter changed the properties of the circular geodesics and the radiation of accretio...
Project supported by the Higher Education Commission of Pakistan through the Indigenous Ph.D. 5000 Fellowship Program Batch-IV
We formulate a model for noncompact spherical charged objects in the framework of noncommutative field theory.The Einstein-Maxwell field equations are solved with charged anisotropic fluid.We choose matter and charge ...
Using the divergence term appearing in the Lagrangian of the teleparallel equivalent of general relativity (TEGR), we calculate the thermodynamic quantities of four tetrads' spacetime reproducing Lense-Thirring (L...
We apply the energy momentum and angular momentum tensor to a tetrad field, with two unknown functions of radial coordinate, in the framework of a teleparallel equivalent of general relativity (TEGR). The definition...
supported Project supported by the National Natural Science Foundation of China (Grant No. 10873004);the Program for Excellent Talents at Hunan Normal University,China;the National Basic Research Program of China (Grant No. 2010CB832803);the Key Program of the National Natural Science Foundation of China (Grant No. 10935013);the Construct Program of the National Key Discipline;the Program for Changjiang Scholars;the Innovative Research Team in University,China(Grant No. IRT0964)
Recently, considerable progress has been made in understanding the early universe by loop quantum cosmology. Modesto et al. investigated the loop quantum black hole (LQBH)using improved semiclassical analysis and th...
Project supported by the National Natural Science Foundation of China (Grant No.10873004);the Key Project of the National Natural Science Foundation of China (Grant No.10935013);the Scientific Research Fund of the Educational Department of Hunan Province of China (Grant No.08B051);the Program for Excellent Talents in Hunan Normal University and the State Key Development Program for Basic Research Program of China (Grant No.2010CB832803)
In this paper, using the third-order WKB approximation, we investigate the quasinormal frequencies of the scalar field in the background of a five-dimensional Lovelock black hole. We find that the ultraviolet correcti...
supported by the Natural Science Foundation of Shanxi Province,China(Grant No 2006011012);the Doctoral Scientific Research Starting Foundation of Shanxi Datong University,China
By using the entanglement entropy method, this paper calculates the statistical entropy of the Bose and Fermi fields in thin films, and derives the Bekenstein-Hawking entropy and its correction term on the background ...
Project supported by the National Natural Science Foundation of China (Grant No 10675045);the Foundation for the Author of National Excellent Doctoral Dissertation of China (Grant No 200317)
This paper investigates the resonant frequencies of the massless scalar field in the near extremal Kerr-like black-brane spacetime. It is shown that the different angular quantum number will present different resonant...