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所属单位：理学院

发表刊物：PHYSICAL REVIEW D

关键字：THERMODYNAMICS FIELD

摘要：Dynamical solutions are always of interest to people in gravity theories. We derive a series of generalized Vaidya solutions in the n-dimensional de Rham-Gabadadze-Tolley massive gravity with a singular reference metric. Similar to the case of the Einstein gravity, the generalized Vaidya solution can describe shining/absorbing stars. Moreover, we also find a more general Vaidya-like solution by introducing a more generic matter field than the pure radiation in the original Vaidya spacetime. As a result, the above generalized Vaidya solution is naturally included in this Vaidya-like solution as a special case. We investigate the thermodynamics for this Vaidya-like spacetime by using the unified first law and present the generalized Misner-Sharp mass. Our results show that the generalized Minser-Sharp mass does exist in this spacetime. In addition, the usual Clausius relation delta Q = TdS holds on the apparent horizon, which implicates that the massive gravity is in a thermodynamic equilibrium state. We find that the work density vanishes for the generalized Vaidya solution, while it appears in the more general Vaidya-like solution. Furthermore, the covariant generalized Minser-Sharp mass in the n-dimensional de Rham-Gabadadze-Tolley massive gravity is also derived by taking a general metric ansatz into account.

ISSN号：2470-0010

是否译文：否

发表时间：2017-04-03

合写作者：Wu, Xin-Meng,Zhang, Hongsheng

通讯作者：胡亚鹏