On 6 December 2013 14:35, meekerdb <meeke...@verizon.net> wrote:
> Yeah, that's Susskinds firewall idea. Just above the event horizon, > within a few Planck lengths, the strings corresponding to stuff that fell > in are spread over the surface and their degrees of freedom account for the > entropy. But the same information also falls into the singularity - which > violates the no-cloning theorem. I think Susskind holds that's this is OK > since nobody can see the violation. But it's far from settled. The > problem is that QM says information should be preserved but GR says it > should be lost in a BH. It's widely assumed that GR is wrong and a quantum > theory of gravity will show information somehow comes out with the Hawking > radiation. > I read something about an elephant falling into a black hole and being in an eternal superposition - one elephant on the event horizon and one crushed in the singularity, the idea being that this was a quantum superposition and both states were "equally real". (It was probably in "New Scientist"...) All sounds a bit postmodern. I think the idea was to do a "Schrodinger's cat" on black holes, and bring out something "paradoxical" about our understanding of them (with apologies to Kermit). -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To post to this group, send email to everything-list@googlegroups.com. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/groups/opt_out.
