Hartle-Hawking Vacuum for c=1 Tachyon Condensation

Details Hartle-Hawking Vacuum for c=1 Tachyon Condensation Hartle-Hawking Vacuum for c=1 Tachyon Condensation

2004-05-11

arxiv.org/abs/hep-th/0405092v1

JHEP 0412:027,2004

Physics

High Energy Physics

High Energy Physics - Theory

14 pages, 1 figure, harvmac

Scientific paper

10.1088/1126-6708/2004/12/027

Quantum vacua are constructed for a time-symmetric cosmology describing closed string tachyon condensation in two-dimensional string theory. Due to the Euclidean periodicity of the solution, and despite its time dependence, we are able to construct thermal states at discrete values of the temperature. The asymptotic thermal Green functions and stress energy tensor are computed and found to have an intriguing resemblance to those in the Hartle-Hawking vacuum of a black hole.

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