Quantized Fields and Chronology Protection

Details Quantized Fields and Chronology Protection Quantized Fields and Chronology Protection

2000-09-17

arxiv.org/abs/gr-qc/0009061v2

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages; ReVTeX; several typos corrected, one argument simplified

Scientific paper

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.

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