I am trying to understand several particle-antiparticle concepts and there are questions that are not answered in any literature:
Hawking's radiation: what happens if classic particle of particle-antiparticle pair falls into black hole and the antiparticle stays out? This actually makes the black hole to grow, but the antiparticle does not annihilate and so the vacuum debt stays unpaid? That's okay?
Hawking's radiation: if the antiparticle falls into black hole and annihilate, it should produce corresponding energy ($E=mc^2$). But as this energy is equal to matter and cannot leave the black hole, how is it possible, that the black hole actually loses weight? If it pays the "vacuum debt" – how does the vacuum know to take this portion of energy from this part of black hole?
How is it possible that antiparticles tend to fall more often then classic particles so that the black holes lose weight?
Which particle-antiparticles are willing to annihilate together? Obviously not all of them as there are mesons which are composed of particle-antiparticles pairs. It looks as if they had to be completely equal?