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A Note on Hartle-Hawking Vacua

Ted Jacobson
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Abstract

The purpose of this note is to establish the basic properties--- regularity at the horizon, time independence, and thermality--- of the generalized Hartle-Hawking vacua defined in static spacetimes with bifurcate Killing horizon admitting a regular Euclidean section. These states, for free or interacting fields, are defined by a path integral on half the Euclidean section. The emphasis is on generality and the arguments are simple but formal.

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BibTeXRIS

Ted Jacobson. 1994-07-19. A Note on Hartle-Hawking Vacua. https://doi.org/10.1103/physrevd.50.r6031

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