A quantum crystal model in the light-mass limit: Gibbs states

被引:26
作者
Minlos, RA
Verbeure, A
Zagrebnov, VA
机构
[1] Russian Acad Sci, Inst Informat Transmiss Problems, Moscow 101447, Russia
[2] Katholieke Univ Leuven, Inst Theoret Fys, B-3001 Louvain, Belgium
[3] Univ Mediterranee, F-13288 Marseille, France
[4] CPT Luminy, F-13288 Marseille 9, France
关键词
D O I
10.1142/S0129055X00000381
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Ground and temperature quantum Gibbs states are constructed for a ferroelectric anharmonic quantum oscillator model with small masses. It is shown that they possess mixing properties. The construction relies on the Feynman-Kac-Nelson representation of the conditional reduced density matrices and on the cluster expansions for the corresponding Gibbs field of trajectories.
引用
收藏
页码:981 / 1032
页数:52
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