PeterDonis's latest activity

Sort of. Many Worlds still has the problem of explaining why we observe the particular Bell inequality violating correlations that we...

Yes, you are wrong. The Kerr-Newman family of black hole spacetimes are globally hyperbolic. That means they have a well-posed initial...

Thread is reopened after deletion of two posts containing personal speculation. Please limit posting to giving references relevant to...

There aren't any, at least not with the usual definition of "black hole". An asymptotically flat spacetime can only have one region that...

More precisely, they encompass all vacuum (actually electrovacuum, see below) black hole solutions. The Vaidya metric was mentioned...

The answer is still the same: the No Hair Theorem has nothing to do with what happens to curvature invariants as the singularity is...

No, finite but very, very large tidal gravity happens before the singularity. Not "infinite"; that only happens in the limit of reaching...

AFAIK, yes, it seems to be a good general description of what shows up in simulations.

No, it's a consequence of looking at the mathematical formula for the invariant and seeing that there is a factor of ##r^6## in the...

The thread topic has been sufficiently discussed, and the thread is closed. Thanks to all who participated.

Um, no. Relativity, and our best current model in cosmology, have corroboration in domains well beyond "human scale observation". This...

If you mean the ingoing Vaidya metric, yes, that basically works the same as the Oppenheimer-Snyder collapse model, except that what's...

The geometry that appears, at least in numerical simulations, to be stable under small perturbations is the BKL singularity, or...

The calculation of the curvature invariant increasing without bound is for the specific Kerr-Newman family of solutions, yes. More...

The Kretschmann invariant increases without bound as ##r \to 0## in the Kerr-Newman family of solutions, which AFAIK is all black hole...