Do We Understand Black Hole Entropy ?

Details Do We Understand Black Hole Entropy ? Do We Understand Black Hole Entropy ?

1994-09-08

arxiv.org/abs/gr-qc/9409015v2

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

plain TeX, 18 pages, Plenary talk at Seventh Marcel Grossman meeting at Stanford University, gr-qc/9409015, revised to include

Scientific paper

I review various proposals for the nature of black hole entropy and for the mechanism behind the operation of the generalized second law. I stress the merits of entanglement entropy {\tenit qua\/} black hole entropy, and point out that, from an operational viewpoint, entanglement entropy is perfectly finite. Problems with this identification such as the multispecies problem and the trivialization of the information puzzle are mentioned. This last leads me to associate black hole entropy rather with the multiplicity of density operators which describe a black hole according to exterior observers. I relate this identification to Sorkin's proof of the generalized second law. I discuss in some depth Frolov and Page's proof of the same law, finding it relevant only for scattering of microsystems by a black hole. Assuming that the law is generally valid I make evident the existence of the universal bound on entropy regardless of issues of acceleration buoyancy, and discuss the question of why macroscopic objects cannot emerge in the Hawking radiance.

Affiliated with

Also associated with

No associations

Rating

Do We Understand Black Hole Entropy ? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Do We Understand Black Hole Entropy ?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Do We Understand Black Hole Entropy ? will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-43500