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Quantum Information, the Ambiguity of the Past, and the Birth ... - PiTP

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A final question about information loss:<br />

Blackbody radiation contains no information about <strong>the</strong><br />

objects it illuminates. Does that mean it does not<br />

decohere <strong>the</strong>m?<br />

Thermal<br />

state in<br />

ρ<br />

Thermal<br />

state out<br />

ρ<br />

No<br />

information

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