Decoherence induced continuous pointer states
arXiv:quant-ph/0208032 · doi:10.1103/PhysRevLett.90.010403
Abstract
We investigate the reduced dynamics in the Markovian approximation of an infinite quantum spin system linearly coupled to a phonon field at positive temperature. The achieved diagonalization leads to a selection of the continuous family of pointer states corresponding to a configuration space of the one-dimensional Ising model. Such a family provides a mathematical description of an apparatus with continuous readings.
8 pages