摘要
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 derivation by Barriola and Vilenkin. Furthermore, we find the physical origin of the topological charge in the global monopole spacetime. Finally, we generalize the proposal which generates spacetime from thermodynamical laws to the case of spacetime with global monopole charge.
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 derivation by Barriola and Vilenkin. Furthermore, we find the physical origin of the topological charge in the global monopole spacetime. Finally, we generalize the proposal which generates spacetime from thermodynamical laws to the case of spacetime with global monopole charge.
作者
谭鸿威
杨锦波
张靖仪
何唐梅
Hongwei Tan, Jinbo yang, Jingyi Zhang, and Tangmei He(Center for Astrophysics, Guangzhou University, Guangzhou 510006, Chin)
基金
Project supported by the National Natural Science Foundation of China(Grant Nos.11273009 and 11303006)
