Gravitational shock waves and vacuum fluctuations
High Energy Physics - Theory
2009-10-31 v1
Abstract
We show that the vacuum expectation value of the stress-energy tensor of a scalar particle on the background of a spherical gravitational shock wave does not give a finite expression in second order perturbation theory, contrary to the case seen for the impulsive wave. No infrared divergences appear at this order. This result shows that there is a qualitative difference between the shock and impulsive wave solutions which is not exhibited in first order.
Keywords
Cite
@article{arxiv.hep-th/9802072,
title = {Gravitational shock waves and vacuum fluctuations},
author = {M. Hortacsu and K. Ulker},
journal= {arXiv preprint arXiv:hep-th/9802072},
year = {2009}
}
Comments
Submitted to Class. and Quant. Grav.,7 pages, no figures