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The Boulware State and the Generalised Second Law of Thermodynamics

Warren G. Anderson
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Abstract

We show that the appropriate vacuum state for the interior of a box with reflecting walls being lowered adiabatically into a Schwarzschild black hole is the Boulware state. This is concordant with the results of Unruh and Wald, who used a different approach to obtain the stress-energy inside the box. Some comments about an entropy bound for ordinary matter, as first conjectured by Bekenstein, are presented.

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Warren G. Anderson. 1994-02-15. The Boulware State and the Generalised Second Law of Thermodynamics. https://doi.org/10.1103/physrevd.50.4786

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