Models of Hidden Purity

Kavli Affiliate: Frank Wilczek

| First 5 Authors: Frank Wilczek, , , ,

| Summary:

I extend, apply, and generalize a model of a quantum radiator proposed by
Griffiths to construct models of radiation fields that exhibit high entropy for
long periods of time but approach pure states asymptotically. The models, which
are fully consistent with the basic principles of quantum theory, provide
coarse-grained models of both realistic physical systems and exotic space-times
including black and white holes and baby and prodigal universes. Their analysis
suggests experimental probes of some basic but subtle implications of quantum
theory including interference between a particle and its own past, influence of
quantum statistical entanglement on entropy flow, and residual entanglement
connecting distant radiation with a degenerate source.

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