On 6 December 2013 14:35, meekerdb <[email protected]> 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/groups/opt_out.
