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The global monopole spacetime and its topological charge |
| Hongwei Tan(谭鸿威), Jinbo Yang(杨锦波), Jingyi Zhang(张靖仪), Tangmei He(何唐梅) |
| Center for Astrophysics, Guangzhou University, Guangzhou 510006, China |
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Abstract 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.
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Received: 16 October 2017
Revised: 22 November 2017
Accepted manuscript online:
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PACS:
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04.20.-q
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(Classical general relativity)
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04.20.Jb
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(Exact solutions)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11273009 and 11303006).{These authors contributed equally to this work. |
Corresponding Authors:
Jingyi Zhang
E-mail: zhangjy@gzhu.edu.cn
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Cite this article:
Hongwei Tan(谭鸿威), Jinbo Yang(杨锦波), Jingyi Zhang(张靖仪), Tangmei He(何唐梅) The global monopole spacetime and its topological charge 2018 Chin. Phys. B 27 030401
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