Do black holes radiate

摘要: The prediction that black holes radiate due to quantum effects is often considered one of the most secure in field theory curved space-time. Yet this rests on two dubious assumptions: ordinary physics may be applied vacuum fluctuations at energy scales increasing exponentially without bound; and quantum-gravitational neglected. Various suggestions have been put forward address these issues: they might explained away by lessons from sonic hole models; indeed successfully reproduced gravity; success link provided between thermodynamics justifies prediction. This paper explains nature difficulties, reviews proposals deal with them. None can so far really successful, simple dimensional arguments show well alter evaporation process outlined Hawking. Thus, a definitive theoretical treatment will require an understanding gravity least some regimes. Until then, no compelling case for or against radiation likely made. possibility non-radiating `mini' exist should taken seriously; such could part dark matter Universe. Attempts place observational limits number (independent assumption radiate) would welcome.