publication . Other literature type . Article . 1982

Acceleration radiation and the generalized second law of thermodynamics

William G. Unruh; Robert M. Wald;
  • Published: 15 Feb 1982
  • Publisher: American Physical Society (APS)
It is shown that the Bekenstein limit, S/E< or =2..pi..R, for the entropy-to-energy ratio of matter confined by a box of size R is not needed for the validity of the generalized second law of thermodynamics. If one attempts to slowly lower a box containing rest energy E and entropy S into a black hole there will be an effective buoyancy force on the box caused by the acceleration radiation felt by the box when it is suspended near the black hole. As a result there is a finite lower bound on the energy delivered to the black hole in this process and thus a minimal area increase which turns out to be just sufficient to ensure that the generalized second law of the...
arXiv: General Relativity and Quantum CosmologyAstrophysics::High Energy Astrophysical Phenomena
free text keywords: Extremal black hole, Black brane, White hole, Quantum electrodynamics, Black hole, Physics, Charged black hole, Black hole thermodynamics, Rotating black hole, Classical mechanics, Penrose process
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