On 1/25/2014 4:37 PM, LizR wrote:
On 26 January 2014 10:58, meekerdb <[email protected] <mailto:[email protected]>>
wrote:
Sure. In the case of a star that collapses to a BH the cause is the matter
which
became so compressed that a singularity formed - and then the matter
disappeared
into it. That's why the Schwarzschild metrice is a vacuum solution, no
matter.
I assume most physicists nowadays think classical GR breaks down at some point before a
singularity forms, so in practice there is /something/ in there (though no one knows
what, and it may be at - or below - the Planck length)....?
Right. I think LQG predicts an Einstein-Rosen bridge. I don't know that string theory
has made definite prediction.
Brent
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