New Gravitational Memories
High Energy Physics - Theory
2017-02-01 v1 General Relativity and Quantum Cosmology
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.
Cite
@article{arxiv.1502.06120,
title = {New Gravitational Memories},
author = {Sabrina Pasterski and Andrew Strominger and Alexander Zhiboedov},
journal= {arXiv preprint arXiv:1502.06120},
year = {2017}
}
Comments
17 pages