Angular momentum and memory effect
Fuente:
arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2023
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| _version_ | 1866911341475790848 |
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| author | Mao, Pujian Wu, Jun-Bao Wu, Xiaoning |
| author_facet | Mao, Pujian Wu, Jun-Bao Wu, Xiaoning |
| contents | It is a long-standing problem in general relativity that the notion of angular momentum of an isolated system has supertranslation ambiguity. In this paper, we argue that the ambiguity is essentially because of the gravitational wave memory. When properly subtracting the memory effect of the observer, one can introduce a supertranslation invariant definition of the angular momentum at null infinity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2301_08032 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Angular momentum and memory effect Mao, Pujian Wu, Jun-Bao Wu, Xiaoning General Relativity and Quantum Cosmology High Energy Physics - Theory It is a long-standing problem in general relativity that the notion of angular momentum of an isolated system has supertranslation ambiguity. In this paper, we argue that the ambiguity is essentially because of the gravitational wave memory. When properly subtracting the memory effect of the observer, one can introduce a supertranslation invariant definition of the angular momentum at null infinity. |
| title | Angular momentum and memory effect |
| topic | General Relativity and Quantum Cosmology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2301.08032 |