Does the Maximum Entropy of a Black Hole Allow for Hawking Radiation?

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SUMMARY

The discussion centers on the relationship between black hole entropy and Hawking radiation. It establishes that a black hole represents the maximum entropy as defined by its mass, in accordance with the Bekenstein bound. The third law of thermodynamics indicates that entropy must increase, raising questions about how Hawking radiation, which signifies black hole evaporation, can occur without violating this principle. The conversation highlights the distinction between the localized entropy of a black hole and the detection of Hawking radiation occurring at an infinite distance.

PREREQUISITES
  • Understanding of black hole thermodynamics
  • Familiarity with the Bekenstein bound
  • Knowledge of Hawking radiation mechanics
  • Basic principles of the third law of thermodynamics
NEXT STEPS
  • Research the implications of the Bekenstein bound on black hole entropy
  • Study the mechanisms of Hawking radiation in detail
  • Explore the relationship between entropy and thermodynamic processes
  • Investigate the concept of entropy at infinity in the context of black holes
USEFUL FOR

The discussion is beneficial for physicists, cosmologists, and students of theoretical physics interested in black hole thermodynamics and the implications of entropy in quantum gravity.

TriTertButoxy
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I originally posted this question in the subsection "Beyond the Standard Model." Unfortunately, nobody replied. Hopefully, someone here might be more insightful.

I read somewhere that a system consisting of a single black hole contains the maximum possible amount of entropy represented by the mass of the black hole. The third law of thermodynamics says that entropy must increase, in general, for all processes.

So, suppose I consider the Hawking Radiation -- the process by which Black Holes evaporate. If the black hole contains the maximal amount of entropy, how does Hawking Radiation occur from a thermodynamic standpoint?
 
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I guess that the point is that the entropy bound given by the entropy of a black hole (the Bekenstein bound) refers to a bounded region of space. The detection of Hawking radiation, on the contrary, occurs "at infinity".
 
Last edited:

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