linkedin post 2021-06-15 04:07:01

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HISTORY. “In 1986 Rafael D. Sorkin of Syracuse University exploited the horizon's role in barring information inside the black hole from influencing affairs outside to show that the GSL (or something very similar to it) must be valid for any conceivable process that black holes undergo. His deep argument makes it clear that the entropy entering the GSL is that calculated down to level X, whatever that level may be.” (GSL = generalized second law). https://lnkd.in/draqjTW View in LinkedIn
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linkedin post 2021-06-15 04:04:53

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THE SOLUTION. “The Christodoulou-Hawking theorem fails in the face of this phenomenon (the mass of the black hole, and therefore its horizon area, decreases), but the GSL copes with it: the entropy of the emergent radiation more than compensates for the decrement in black hole entropy, so the GSL is preserved.” (GSL = generalized second law). https://lnkd.in/draqjTW View in LinkedIn
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linkedin post 2021-06-15 04:02:43

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VIOLATION. “The GSL has passed a large number of stringent, if purely theoretical, tests. When a star collapses to form a black hole, the black hole entropy greatly exceeds the star's entropy. In 1974 Hawking demonstrated that a black hole spontaneously emits thermal radiation, now known as Hawking radiation, by a quantum process.” (GSL = generalized second law). https://lnkd.in/draqjTW View in LinkedIn
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linkedin post 2021-06-15 04:00:46

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INVIOLABLE THERMODYNAMICS. “I conjectured that when matter falls into a black hole, the increase in black hole entropy always compensates or overcompensates for the lost entropy of the matter. More generally, the sum of black hole entropies and the ordinary entropy outside the black holes cannot decrease. This is the generalized second law--GSL for short.” https://lnkd.in/draqjTW View in LinkedIn
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