arXiv:2305.18521gr-qc
Gravitational Pair Production and Black Hole Evaporation
Early discovery. Linked by one identifiable commenter. This paper is outside the main ranking; a mention is not an endorsement.
Abstract
We present a new avenue to black hole evaporation using a heat-kernel approach analogous as for the Schwinger effect. Applying this method to an uncharged massless scalar field in a Schwarzschild spacetime, we show that spacetime curvature takes a similar role as the electric field strength in the Schwinger effect. We interpret our results as local pair production in a gravitational field and derive a radial production profile. The resulting emission peaks near the unstable photon orbit. Comparing the particle number and energy flux to the Hawking case, we find both effects to be of similar order. However, our pair production mechanism itself does not explicitly make use of the presence of a black hole event horizon.
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…
raattgiftView on HNParent context
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…
raattgiftView on HNParent context
"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…
raattgiftView on HNParent context