Physics
Scientific paper
Apr 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984phrvd..29.1618c&link_type=abstract
Physical Review D (Particles and Fields), Volume 29, Issue 8, 15 April 1984, pp.1618-1625
Physics
40
Scientific paper
For a conformally coupled scalar field we calculate the renormalized value of <φ2> for the Hartle-Hawking vacuum in Schwarzschild spacetime for the region exterior to the horizon. We find that the mode-sum expression for <φ2>ren separates naturally into two parts, a part that has a simple analytic form coinciding with the approximate expression of Whiting and Page, and a remainder that is small. We evaluate the remainder numerically and also provide an analytic approximation to it. Our results agree with, but are substantially more accurate than, those previously given by Fawcett.
Candelas Philip
Howard K. W.
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