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Hawking radiation is explained by particle-antiparticle creation. A particle with positive energy escapes away from the black hole while the particle with negative energy falls down.

Why isn't that vice versa? A particle with positive mass should fall down due to gravity force, while the negative mass is to be repeled by the gravity force?

Edit: I think was wrong about the gravity repeling the negative mass. Even though the force is directed away from the black hole, a=F/m so the particle still falls down the black hole! Now I see no point why any particles should be escaping more than the other?

0xF
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  • https://en.wikipedia.org/wiki/Gravitational_interaction_of_antimatter Seems like the current understanding is that antiparticles have positive mass still (though I know very little about this, so I can't really give an answer or any useful information besides what I found on google). – JMac Jul 03 '19 at 11:39
  • Is the negative energy same as negative mass? mass is invariant property of (fundamental) particles and there is no known particle with negative mass... – Umaxo Jul 03 '19 at 12:12
  • @Umaxo https://en.wikipedia.org/wiki/Negative_mass – 0xF Jul 03 '19 at 12:16
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    Related, possibly duplicate: https://physics.stackexchange.com/questions/30597/black-holes-and-positive-negative-energy-particles Also see https://physics.stackexchange.com/questions/251385/an-explanation-of-hawking-radiation – PM 2Ring Jul 03 '19 at 12:33
  • @0xF i do not think the article applies, since it is highly spekulative and existence of hawking radiation should not depend on wheter such mass exists or not. – Umaxo Jul 03 '19 at 13:08
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    Have a look at this video about Hawking Radiation – AWanderingMind Jul 03 '19 at 17:52

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