Can a particle detector cross a Cauchy horizon?
Abstract
Cauchy horizons are well known to exhibit instabilities in classical spacetime dynamics and singularities in quantum field theory. We analyse the response of an Unruh-DeWitt particle detector that falls towards a Cauchy horizon, in terms of the specifics of the horizon, the choice of the quantum state and the specifics of the detector's trajectory. As a prototype, we study in detail the case for the Reissner-Nordstr\"om black hole with a scalar field in the Hartle-Hawking state. Comparisons are made with the response of a detector that falls into a Schwarzschild-like singularity.
Keywords
Cite
@article{arxiv.1502.02533,
title = {Can a particle detector cross a Cauchy horizon?},
author = {Benito A. Juárez-Aubry},
journal= {arXiv preprint arXiv:1502.02533},
year = {2015}
}
Comments
11 pages, 1 figure. Proceedings of the VII Black Holes Workshop. To appear in the International Journal of Modern Physics D. v2: Corrected typos. Conclusions expanded