[math-fun] Hawking black hole info paradox -- solved? Looks like it.

http://arxiv.org/abs/1503.01487 Anshul Saini, Dejan Stojkovic: Radiation from a collapsing object is manifestly unitary Phys.Rev.Lett. 114,11 (2015) 111301 This claims to explicitly calculate the full density matrix, i.e. including all off-diagonal terms, of the Hawking radiation from a "collapsing shell" model of a black hole. It stays unitary at all times. Thus the Hawking "information loss paradox" actually does not occur. It looks to me, at least on the surface, like they've really done it, and they didn't need to do anything crazy. -- Warren D. Smith http://RangeVoting.org <-- add your endorsement (by clicking "endorse" as 1st step)