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arXiv · 1502.06120

New Gravitational Memories

Sabrina Pasterski·Andrew Strominger·Alexander Zhiboedov
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Abstract

The conventional gravitational memory effect is a relative displacement in the position of two detectors induced by radiative energy flux. We find a new type of gravitational `spin memory' in which beams on clockwise and counterclockwise orbits acquire a relative delay induced by radiative angular momentum flux. It has recently been shown that the displacement memory formula is a Fourier transform in time of Weinberg's soft graviton theorem. Here we see that the spin memory formula is a Fourier transform in time of the recently-discovered subleading soft graviton theorem.

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Sabrina Pasterski, Andrew Strominger, Alexander Zhiboedov. 2015-02-21. New Gravitational Memories. https://doi.org/10.1007/jhep12(2016)053

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