Dynamical evolution of quantum oscillators toward equilibrium.

作者: A. R. Usha Devi , A. K. Rajagopal

DOI: 10.1103/PHYSREVE.80.011136

关键词:

摘要: A pure quantum state of large number N oscillators, interacting via harmonic coupling, evolves such that any small subsystem nN the global approaches equilibrium. This provides a different example where stationarity emerges as natural phenomena under dynamics alone, with no necessity to bring in additional statistical postulates. Mixedness equilibrated subsystems consisting 1,2,...,nN clearly indicates are entangled rest state, i.e., bath. Every single mode oscillator is found relax mixed density matrix Boltzmann canonical form. In two stationary subsystems, intraentanglement within "system" oscillators exist when magnitude squeezing parameter bath comparable coupling strength. © 2009 The American Physical Society.

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