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Journal Article

#### Noise kernel for a quantum field in Schwarzschild spacetime under the Gaussian approximation

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##### Fulltext (public)

1011.4903

(Preprint), 298KB

PRD85_044037.pdf

(Any fulltext), 258KB

##### Supplementary Material (public)

There is no public supplementary material available

##### Citation

Eftekharzadeh, A., Bates, J. D., Roura, A., Anderson, P. R., & Hu, B. L. (2012).
Noise kernel for a quantum field in Schwarzschild spacetime under the Gaussian approximation.* Physical
Review D,* *85*(4): 044037. doi:10.1103/PhysRevD.85.044037.

Cite as: http://hdl.handle.net/11858/00-001M-0000-0012-D1A4-0

##### Abstract

A method is given to compute the noise kernel, defined as the symmetrized
connected 2-point function of the stress tensor, for the conformally invariant
scalar field in the Hartle-Hawking state in Schwarzschild spacetime. We
consider the two points to be separated in a timelike or a spacelike direction
and use a Gaussian approximation of the same type as that used by Page to
compute an approximate form of the stress tensor for this field in
Schwarzschild spacetime. Several components of the noise kernel have been
explicitly computed and the expression for one of them is displayed.