Quantized Fields and Chronology Protection
General Relativity and Quantum Cosmology
2007-05-23 v2
Abstract
Several recent possible counterexamples to the Chronology Protection Conjecture are critically examined. The ``adapted'' Rindler vacuum state constructed by Li and Gott for a conformal scalar field in Misner space is extended to nonconformally coupled and self-interacting scalar fields. For these fields, the vacuum stress-energy always diverges on the chronology horizons. The divergence of the vacuum stress-energy on Misner space chronology horizons cannot be generally avoided by choosing a Rindler-type vacuum state.
Cite
@article{arxiv.gr-qc/0009061,
title = {Quantized Fields and Chronology Protection},
author = {William A. Hiscock},
journal= {arXiv preprint arXiv:gr-qc/0009061},
year = {2007}
}
Comments
10 pages; ReVTeX; several typos corrected, one argument simplified