Displacement memory effect near the horizon of black holes
Abstract
We study the displacement memory effect and its connection with the extended-BMS symmetries near the horizon of black holes. We show there is a permanent shift in the geodesic deviation vector relating two nearby timelike geodesics placed close to the horizon of black holes, upon the passage of gravitational waves. We also relate this memory effect with the asymptotic symmetries near the horizon of asymptotic black hole spacetimes. The shift of the relative position of the detectors is shown to be induced by a combination of BMS generators near the horizon. The displacement memory effect near the horizon possesses similarities to the same obtained in the far region.
Keywords
Cite
@article{arxiv.2010.16086,
title = {Displacement memory effect near the horizon of black holes},
author = {Srijit Bhattacharjee and Shailesh Kumar and Arpan Bhattacharyya},
journal= {arXiv preprint arXiv:2010.16086},
year = {2021}
}
Comments
V3: 28 pages, 1 figure, 1 reference added, and Substantial changes to the texts, matches with the version to appear in Journal of High Energy Physics