It says hawking radiation appears due to a particle and anti-particle pair one of which gets sucked in and other one escapes , these particles are said to appear out of nowhere , appear everywhere in the universe and are opposite of each other.

As such in normal universe away from a black hole why doesn't their recombination and Anhilation lead to emission of energy as light or heat like combination of matter and antimatter should?

Why isn't the universe glowing and all of us dead because of the energy from recombination of these particles everywhere as hwaking suggests?

  • $\begingroup$ Maybe because there is no event horizon? $\endgroup$ – peterh Jun 1 '17 at 20:01
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    $\begingroup$ @peterh com'on try a little harder I know you can make sense $\endgroup$ – user1062760 Jun 1 '17 at 20:08
  • $\begingroup$ There is no event horizon. HR works around EHs. Getting 2 photons from nothing could hold impulse conservation, but it couldn't energy conservation. Thus, there is no such process. Virtual photons can exist, but only for a short time and you can't get energy from them. $\endgroup$ – peterh Jun 1 '17 at 20:16
  • $\begingroup$ Look up Olber's paradox $\endgroup$ – Ismasou Jun 1 '17 at 23:31
  • $\begingroup$ @Ismasou The Hawking radiation coming from the empty vacuum is zero, because there is no event horizon in it. Thus, there is no Olbers paradox in the picture. If you could decode any more meaning from the question as I could, just write an answer. $\endgroup$ – peterh Jun 1 '17 at 23:36

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