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Memory, Penrose limits and the geometry of gravitational shockwaves and gyratons
Journal of High Energy Physics, Volume: 2018, Issue: 12, Start page: 133
Swansea University Author: Graham Shore
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DOI (Published version): 10.1007/JHEP12(2018)133
Abstract
The geometric description of gravitational memory for strong gravitational waves is developed, with particular focus on shockwaves and their spinning analogues, gyratons. Memory, which may be of position or velocity-encoded type, characterises the residual separation of neighbouring ‘detector’ geode...
Published in: | Journal of High Energy Physics |
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ISSN: | 1029-8479 |
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Berlin-Heidelberg
Springer
2018
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URI: | https://cronfa.swan.ac.uk/Record/cronfa47959 |
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2020-06-16T15:57:40.0305463 v2 47959 2018-12-13 Memory, Penrose limits and the geometry of gravitational shockwaves and gyratons 28a24f55687c82d6f3ee378ead3cf234 Graham Shore Graham Shore true false 2018-12-13 FGSEN The geometric description of gravitational memory for strong gravitational waves is developed, with particular focus on shockwaves and their spinning analogues, gyratons. Memory, which may be of position or velocity-encoded type, characterises the residual separation of neighbouring ‘detector’ geodesics following the passage of a gravitational wave burst, and retains information on the nature of the wave source. Here, it is shown how memory is encoded in the Penrose limit of the original gravitational wave spacetime and a new ‘timelike Penrose limit’ is introduced to complement the original plane wave limit appropriate to null congruences. A detailed analysis of memory is presented for timelike and null geodesic congruences in impulsive and extended gravitational shockwaves of Aichelburg-Sexl type, and for gyratons. Potential applications to gravitational wave astronomy and to quantum gravity, especially infra-red structure and ultra-high energy scattering, are briefly mentioned. Journal Article Journal of High Energy Physics 2018 12 133 Springer Berlin-Heidelberg 1029-8479 General relativity, quantum gravity 21 12 2018 2018-12-21 10.1007/JHEP12(2018)133 https://arxiv.org/pdf/1811.08827.pdf COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University 2020-06-16T15:57:40.0305463 2018-12-13T15:48:34.7833727 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Graham Shore 1 0047959-03012019125022.pdf 47959.pdf 2019-01-03T12:50:22.7930000 Output 1519049 application/pdf Version of Record true 2019-01-01T00:00:00.0000000 Released under the terms of a Creative Commons Attribution License (CC-BY). true eng |
title |
Memory, Penrose limits and the geometry of gravitational shockwaves and gyratons |
spellingShingle |
Memory, Penrose limits and the geometry of gravitational shockwaves and gyratons Graham Shore |
title_short |
Memory, Penrose limits and the geometry of gravitational shockwaves and gyratons |
title_full |
Memory, Penrose limits and the geometry of gravitational shockwaves and gyratons |
title_fullStr |
Memory, Penrose limits and the geometry of gravitational shockwaves and gyratons |
title_full_unstemmed |
Memory, Penrose limits and the geometry of gravitational shockwaves and gyratons |
title_sort |
Memory, Penrose limits and the geometry of gravitational shockwaves and gyratons |
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28a24f55687c82d6f3ee378ead3cf234 |
author_id_fullname_str_mv |
28a24f55687c82d6f3ee378ead3cf234_***_Graham Shore |
author |
Graham Shore |
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Graham Shore |
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Journal article |
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Journal of High Energy Physics |
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2018 |
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12 |
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133 |
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2018 |
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Swansea University |
issn |
1029-8479 |
doi_str_mv |
10.1007/JHEP12(2018)133 |
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Springer |
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Faculty of Science and Engineering |
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School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics |
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https://arxiv.org/pdf/1811.08827.pdf |
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description |
The geometric description of gravitational memory for strong gravitational waves is developed, with particular focus on shockwaves and their spinning analogues, gyratons. Memory, which may be of position or velocity-encoded type, characterises the residual separation of neighbouring ‘detector’ geodesics following the passage of a gravitational wave burst, and retains information on the nature of the wave source. Here, it is shown how memory is encoded in the Penrose limit of the original gravitational wave spacetime and a new ‘timelike Penrose limit’ is introduced to complement the original plane wave limit appropriate to null congruences. A detailed analysis of memory is presented for timelike and null geodesic congruences in impulsive and extended gravitational shockwaves of Aichelburg-Sexl type, and for gyratons. Potential applications to gravitational wave astronomy and to quantum gravity, especially infra-red structure and ultra-high energy scattering, are briefly mentioned. |
published_date |
2018-12-21T03:58:12Z |
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1763752953732136960 |
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11.021648 |