Do black holes destroy information?
Answers
The black hole information paradox[1] is a puzzle resulting from the combination of quantum mechanics and general relativity. Calculations suggest that physical information could permanently disappear in a black hole, allowing many physical states to devolve into the same state. This is controversial because it violates a core precept of modern physics—that in principlethe value of a wave function of a physical system at one point in time should determine its value at any other time.[2][3] A fundamental postulate of the Copenhagen interpretation of quantum mechanics is that complete information about a system is encoded in its wave function up to when the wave function collapses. The evolution of the wave function is determined by a unitary
operator, and unitarity implies that information is conserved in the quantum sense.