Decoherence-induced continuous pointer states

被引：17
作者：
Blanchard, P
Olkiewicz, R
机构：
[1] Univ Bielefeld, Fac Phys, D-33615 Bielefeld, Germany
[2] Univ Bielefeld, BiBoS, D-33615 Bielefeld, Germany
[3] Univ Wroclaw, Inst Theoret Phys, PL-50204 Wroclaw, Poland
来源：
PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 01期
关键词：
WAVE PACKET; ENVIRONMENT;
D O I：
10.1103/PhysRevLett.90.010403
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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.
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