2 GRV Gravitation · Verified · ◆◆◆◆◆Difficulty: Legendary (5 of 5) The Black Hole Information Paradox Hawking radiation appears thermal, with temperature … suggesting that a black hole formed from a pure state evaporates into a mixed state — violating unitarity. How is quantum… GP Grigori Perelman black-holes information-paradox hawking-radiation unitarity 2 votes 2 claims posted 3 months ago