BINDING OF HOLES IN THE HUBBARD-MODEL

被引：68

作者：

DAGOTTO, E

MOREO, A

SUGAR, RL

TOUSSAINT, D

机构：

[1] UNIV CALIF SANTA BARBARA,DEPT PHYS,SANTA BARBARA,CA 93106

[2] UNIV ARIZONA,DEPT PHYS,TUCSON,AZ 85721

来源：

PHYSICAL REVIEW B | 1990年 / 41卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.41.811

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a new numerical method for the study of binding energies of particles in fermionic systems. Working with an imaginary chemical potential we can obtain results in the canonical ensemble by simple modifications of standard numerical techniques. We applied the technique to the two-dimensional Hubbard model observing binding of holes at half-filling on lattices of 4×4 sites. For U/t=4 we estimate that the binding energy is =-0.10 0.02. © 1990 The American Physical Society.

引用

页码：811 / 814

页数：4

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