"In September 1973, while I was visiting Moscow, I discussed s with two leading Soviet experts, Yakov Zeldovich and Alexander Starobinsky. They convince me that, according to the uncertainty principle, s should create and emit particles. I believed their arguments on physical grounds but did not like the mathematical way in which they calculated the emission. I therefore set about devising a better mathematical treatment... when I did the calculation I found to my surprise and annoyance, that even nonrotating black holes should create and emit particles at a steady rate. ...[What finally convinced me that the emission was real was that the spectrum of the emitted particles was exactly that which would be emitted by a hot body... at exactly... the correct rate to prevent violations of the second law."
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Original Language: English
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Sources
Stephen Hawking, The Cambridge Lectures (1996) pp. 80-81.
https://en.wikiquote.org/wiki/Uncertainty_principle
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Uncertainty principle
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