MG15 - Talk detail |
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Participant |
Bhattacharjee, Srijit | |||||||
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Institution |
Indian Institute of Information Technology, Allahabad - Devghat, Jhalwa - Allahabad - Uttar Pradesh - India | |||||||
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Session |
BH5 |
Accepted |
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Order |
Time |
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Talk |
Oral abstract |
Title |
Soldering freedom and supertranslation like symmetries at the horizon | |||||
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Abstract |
When two spacetimes are stitched together across a null shell placed at the horizon of a black hole, BMS-supertranslation like soldering freedom arises if one demands that, the induced metric on the shell should remain invariant under the translations generated by the null generators of the shell. We show this phenomenon for null shells placed at the horizon of rotating black holes. We also demonstrate that BMS-superrotation like symmetry can also emerge if we solder two metrics across a null hypersurface for which the induced metric is invariant up to a conformal rescaling. We demonstrate the appearance of this new type of soldering symmetry for the case of BTZ and Schwarzschild black holes. |
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