GROUND-STATE ENERGY AND LOW-TEMPERATURE BEHAVIOR OF THE ONE-DIMENSIONAL FALICOV-KIMBALL MODEL

被引：10

作者：

GRUBER, C ^{[1
]}

LEBOWITZ, JL ^{[1
]}

MACRIS, N ^{[1
]}

机构：

[1] RUTGERS STATE UNIV,DEPT MATH & PHYS,NEW BRUNSWICK,NJ 08903

来源：

EUROPHYSICS LETTERS | 1993年 / 21卷 / 04期

关键词：

QUANTUM STATISTICAL MECHANICS; GENERAL THEORIES AND COMPUTATIONAL TECHNIQUES;

D O I：

10.1209/0295-5075/21/4/002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We consider the Falicov-Kimball model in the case of an equal number of classical <<nuclei>> and quantum <<electrons>> with Fermi statistics. In one dimension we find an exact formula for the leading behavior of the ground-state energy as a function of the attractive potential U between electrons and nuclei. For U > U(c) the system forms <<atoms>> which have an effective repulsion between them. Similar results hold for a continuum model provided there is a sufficiently large hard core between the nuclei. Some low-temperature properties are also discussed.

引用

页码：389 / 394

页数：6

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