From Shockwaves to the Gravitational Memory Effect
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arXiv
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| Format: | Preprint |
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2023
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| _version_ | 1866910286893547520 |
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| author | He, Temple Raclariu, Ana-Maria Zurek, Kathryn M. |
| author_facet | He, Temple Raclariu, Ana-Maria Zurek, Kathryn M. |
| contents | We study the relationship between shockwave geometries and the gravitational memory effect in four-dimensional asymptotically flat spacetime. In particular, we show the 't Hooft commutation relations of shockwave operators are equivalent to the commutation relation between soft and Goldstone modes parametrizing a sector of the gravitational phase space. We demonstrate this equivalence via a diffeomorphism that takes a shockwave metric to a metric whose transverse traceless component is the gravitational memory. The shockwave momentum in 't Hooft's analysis is related to the soft graviton mode, which is responsible for the memory effect, while the shift in the shockwave position is related to the Goldstone mode. This equivalence opens new directions to utilize the gravitational memory effect to explore the observational implications of shockwave geometries in flat space. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2305_14411 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | From Shockwaves to the Gravitational Memory Effect He, Temple Raclariu, Ana-Maria Zurek, Kathryn M. High Energy Physics - Theory General Relativity and Quantum Cosmology High Energy Physics - Phenomenology We study the relationship between shockwave geometries and the gravitational memory effect in four-dimensional asymptotically flat spacetime. In particular, we show the 't Hooft commutation relations of shockwave operators are equivalent to the commutation relation between soft and Goldstone modes parametrizing a sector of the gravitational phase space. We demonstrate this equivalence via a diffeomorphism that takes a shockwave metric to a metric whose transverse traceless component is the gravitational memory. The shockwave momentum in 't Hooft's analysis is related to the soft graviton mode, which is responsible for the memory effect, while the shift in the shockwave position is related to the Goldstone mode. This equivalence opens new directions to utilize the gravitational memory effect to explore the observational implications of shockwave geometries in flat space. |
| title | From Shockwaves to the Gravitational Memory Effect |
| topic | High Energy Physics - Theory General Relativity and Quantum Cosmology High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2305.14411 |