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Zbl 1232.83047
Jensen, Bruce P.; McLaughlin, John G.; Ottewill, Adrian C.
Anisotropy of the quantum thermal state in Schwarzschild space-time. (English)
[J] Phys. Rev. D (3) 45, No. 8, 3002-3005 (1992). ISSN 0556-2821; ISSN 1089-4918/e

Summary: The renormalized expectation value of the stress-tensor operator in the Boulware vacuum state is calculated for a massless, conformally coupled scalar field in Schwarzschild space-time. It is found that the difference between the expectation values of the stress tensor in the Boulware and Hartle-Hawking vacua is not isotropic, in contrast with the conjecture of Christensen and Fulling. The results are seen to vindicate the approximation scheme of Brown and Ottewill.

MSC 2000:: *83C47 Quantum field theory on curved space-times

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