Astronomy & Space Science · AST-446
Hawking Radiation & the Information Problem: Foundations
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Overview
Core model: Hawking Radiation & the Information Problem
Hawking radiation is a quantum-field-theory prediction that black holes are not perfectly black when quantum effects are considered: they possess a temperature and can lose mass extremely slowly through thermal radiation. This prediction creates a deep tension between black-hole evaporation and the quantum principle that information is preserved in unitary evolution.
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- 01Black Holes and Curved Spacetime — SummaryOpen source ↗
OpenStax Astronomy 2e
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Hawking radiation is a quantum-field-theory prediction that black holes are not perfectly black when quantum effects are considered: they possess a temperature and can lose mass extremely slowly through thermal radiation.
supported · checked Sep 22, 2026The modern derivation treats quantum fields on curved spacetime; particle definitions for observers before and after gravitational collapse do not coincide, leading distant observers to detect thermal radiation.
supported · checked Sep 22, 2026Hawking radiation has not been directly detected from astrophysical black holes because their predicted temperatures are far below surrounding backgrounds.
supported · checked Sep 22, 2026