Entanglement and Nonunitary Evolution
arXiv:hep-th/0609075 · doi:10.1088/1126-6708/2007/04/086
Abstract
We consider a collapsing relativistic spherical shell for a free quantum field. Once the center of the wavefunction of the shell passes a certain radius R, the degrees of freedom inside R are traced over. We show that an observer outside this region will determine that the evolution of the system is nonunitary. We argue that this phenomenon is generic to entangled systems, and discuss a possible relation to black hole physics.
14 pages, 1 figure; Added a clarification regarding the relation with black hole physics
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- Quantum-Gravity Decoherence Effects in Neutrino Oscillations: Expected Constraints from CNGS and J-PARC
- Finite entanglement entropy from the zero-point-area of spacetime
- Left/right entanglement and thermalization of time dependent plane wave Green-Schwarz superstring
- Entanglement Entropy from TFD Entropy Operator