The global monopole spacetime and its topological charge

• 来源期刊: 中国物理B（英文版）
• 关键词: global monopole spacetime exact solution topological charge thermodynamics
• 年，卷（期）: 2018,（3）
• 页码范围: 146-152
• 页数: 7页
• 语种: 英文
• DOI: 10.1088/1674-1056/27/3/030401

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.