I learned that pair production near black holes can cause them to loose energy, and eventually stop. But this is because quantum fluctuations cause particle and anti-particle pairs and the anti-particle gets pulled into the black hole while the other particle goes off into space. The anti-particle causes the black hole's energy to decrease. My question is why the anti-particle goes in the black hole instead of the normal particle? I read it had something to do with a red-shift, but the response was quite vague. Also if nothing was to cause the anti-particle to go in the black holes, it would be a 50-50 chance that the normal particle or anti-particle enters the black hole. This 50-50 chance would in the long run lead to no change.
I got my information after a lecture on the matter a few months ago.
