Gravitational Pair Production and Black Hole Evaporation · HackerPapers discussions

Gravitational Pair Production and Black Hole Evaporation — mentioned by raattgift

Sun, 04 Jun 2023 18:29:24 GMT

"Everything will evaporate" is the press-release title, and does not fairly capture the Schwarzschild-black-hole-focused work in the paper press-released by the university. The PR title overemphasizes and mischaracterizes the last paragraph of the paper's conclusion as something more than an appeal for further investigation of central masses other than black holes. Their analysis does not rely on the presence of a (particular family of) horizons (cf. Visser Phys. Rev. D 90, 127502 (2014)), and therefore other spherically symmetric non-rotating central masses (possibly even noncompact ones)…

Paper and discussion history. A mention is not an endorsement.

Gravitational Pair Production and Black Hole Evaporation — HN submission

Sat, 03 Jun 2023 23:53:31 GMT

Gravitational Pair Production and Black Hole Evaporation

3 points; 0 discussion replies on HN. Paper and source history. A submission is not an endorsement.

Gravitational Pair Production and Black Hole Evaporation — mentioned by raattgift

Fri, 02 Jun 2023 23:39:11 GMT

The work press-release-announced in the link at the top, the preprint for which is at <https://arxiv.org/abs/2305.18521>, has nothing to do with cosmic inflation. At all. The authors are at pains to contain the dynamical aspect of the spacetimes they investigate. In particular they write, "... we also expect our particle production mechanism to backreact on the spacetime. However, the spacetime background we have used here is constant by construction". Their investigation works on asymptotically flat spacetimes and so (a) are manifestly not cosmological in itself and (b) can be "knitted" into…

Paper and discussion history. A mention is not an endorsement.

Gravitational Pair Production and Black Hole Evaporation — mentioned by raattgift

Fri, 02 Jun 2023 22:54:09 GMT

I prefer (and submitted) the summary of this work at https://bigthink.com/starts-with-a-bang/hawking-radiation-bl... which also has the advantage of linking to the arxiv preprint https://arxiv.org/abs/2305.18521 unlike this terse and not-very-enlightening press release by the authors' institution.

Paper and discussion history. A mention is not an endorsement.