A Self-Consistent Vacuum for Misner Space and the Chronology Protection Conjecture

Abstract

In this paper we find a self-consistent vacuum for Misner space. For this "adapted" Rindler vacuum the renormalized stress-energy tensor is zero throughout the Misner space. A point-like particle detector traveling on a timelike geodesic in a Misner space with this vacuum detects nothing. Misner space with this vacuum thus creates no problems for time travel in and of itself but a time traveler may pose a danger to himself and to the spacetime.

5 pages, received September 5, 1997, with a note added November 24, 1997

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