We show that the gravitational quasi-normal modes (QNMs) of a Schwarzschild black hole play the role of a multimode squeezer that can generate particles. For a minimally coupled scalar field, the QNMs "squeeze" the initial state of the scalar field (even for the vacuum) and produce scalar particles. The maximal squeezing amplitude is inversely proportional to the cube of the imaginary part of the QNM frequency, implying that the particle generation efficiency is higher for lower decaying QNMs. Our results show that the gravitational perturbations can amplify Hawking radiation.
@article{arxiv.1706.09117,
title = {Black Hole Squeezers},
author = {Daiqin Su and C. T. Marco Ho and Robert B. Mann and Timothy C. Ralph},
journal= {arXiv preprint arXiv:1706.09117},
year = {2017}
}
Comments
19 pages, 3 figures, 1 table. Comments are welcome