Existence of an incommensurate ground state of interacting spinless fermions in infinite dimensions

被引:5
作者
Uhrig, G. S. [1 ]
Vlaming, R. [2 ]
机构
[1] Univ Cologne, Inst Theor Phys, D-50937 Cologne, Germany
[2] UvA, Inst Theor Fys, NL-1018 XE Amsterdam, Netherlands
关键词
D O I
10.1016/0921-4526(94)00559-E
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
We focus on the ground state phase diagram of a system of spinless fermions with repulsion on a hypercubic lattice in the limit of infinite dimensions. Spontaneous symmetry breaking into a charge density wave (CDW) occurs. Using an ansatz for the order parameter which includes the homogeneous, the AB and a large class of incommensurate phases we are able to calculate the phase diagram.
引用
收藏
页码:694 / 697
页数:4
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