Generalized second law of thermodynamics in black-hole physics
@article{Bekenstein1974GeneralizedSL, title={Generalized second law of thermodynamics in black-hole physics}, author={Jacob David Bekenstein}, journal={Jacob Bekenstein}, year={1974} }
In previous work we introduced the concept of black-hole entropy, which we identified with the surface area of the black hole in question expressed in units of the Planck length squared. We suggested that the appropriate generalization of the second law for a region containing a black hole is that the black-hole entropy plus the common entropy in the black-hole exterior never decreases. Here we establish the validity of this law for the infall of an entropy-bearing system into a much larger and…
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