Timeline for Do all massive bodies emit Hawking or Unruh radiation?
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| Feb 22, 2019 at 15:03 | comment | added | Peter Shor | @AlNejati: I'd also suggest that the question "Is Hawking radiation produced at the horizon?" is similar to the question "Is an electron a particle or a wave?" The best answer is "yes and no". | |
| Feb 22, 2019 at 14:56 | comment | added | Peter Shor | @Al Nejati: the horizon is absolutely necessary for Hawking radiation; if there's a neutron star whose surface is just outside the horizon, there is no Hawking radiation. So whether or not you think the Hawking radiation is produced at the horizon, the horizon is an essential component of the process. | |
| Oct 23, 2018 at 22:32 | comment | added | A Nejati | This thread is long dead, but I think it's necessary to remind everyone that Hawking radiation is not produced at the horizon. In fact, it is produced over an extended area many times larger than the horizon. It is a non-local, quantum mechanical effect. | |
| Oct 25, 2014 at 12:37 | comment | added | Incnis Mrsi | @Anixx: you conflate two different things: conservation of energy (a consequence of the time translation invariance), and conservations of so named “numbers” (except for charges, see “gauge theories”, are not thought to have a deep substantiation). | |
| Dec 5, 2012 at 2:05 | review | Late answers | |||
| Dec 5, 2012 at 3:45 | |||||
| Aug 19, 2011 at 7:29 | comment | added | Anixx | "a virtual black holes can pop in and pop out, but it conserves energy" - why it should conserve energy? why matter cannot decay through VBH fourmation? | |
| Aug 18, 2011 at 6:12 | comment | added | Ron Maimon | I didn't say no horizon means no radiation--- I said if there is stuff between you and the horizon, you see the stuff, not the emissions from the far-away virtual horizon. The virtual black hole business is silly--- a virtual black holes can pop in and pop out, but it conserves energy and doesn't lead to any detectible particle production unless there is a horizon visible. Every static solution has a conserved energy. | |
| Aug 15, 2011 at 12:02 | comment | added | Anixx | It seems you did not read the question. Your stand that "no horizon=no radiation" has been already addressed by a conjecture that the horizon can emerge virtually. | |
| Aug 15, 2011 at 4:48 | history | answered | Ron Maimon | CC BY-SA 3.0 |