Black holes conserve information in curved-space quantum field theory

Details Black holes conserve information in curved-space quantum field theory Black holes conserve information in curved-space quantum field theory

2004-07-23

arxiv.org/abs/gr-qc/0407090v4

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Improved description of black hole scattering, minor clarifications

Scientific paper

We show that black hole formation and evaporation in curved-space quantum field theory can be described in a unitary manner consistent with previous results that take scattering and stimulated emission into account. In particular, we show that the entropy accreted by a black hole when particles cross the event horizon is exactly balanced by a commensurate entropy increase of the rest of the universe, owing to the quantum entanglement between the black hole, Hawking radiation, and scattered radiation (including stimulated emission). Radiation emitted by a black hole in response to infalling matter is non-thermal, and contains all of the information of the initial state.

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