BINDING OF HOLES IN THE HUBBARD-MODEL

被引：69

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

共 16 条

[1] THE RESONATING VALENCE BOND STATE IN LA2CUO4 AND SUPERCONDUCTIVITY [J].

ANDERSON, PW .

SCIENCE, 1987, 235 (4793) :1196-1198

[2]

[Anonymous], 1980, MODERN TRENDS THEORY

[3] PROBLEMS WITH FINITE DENSITY SIMULATIONS OF LATTICE QCD [J].

BARBOUR, I ;

BEHILIL, NE ;

DAGOTTO, E ;

KARSCH, F ;

MOREO, A ;

STONE, M ;

WYLD, HW .

NUCLEAR PHYSICS B, 1986, 275 (02) :296-318

[4] LATTICE QCD AT FINITE DENSITY [J].

BARBOUR, IM ;

DAVIES, CTH ;

SABEUR, Z .

PHYSICS LETTERS B, 1988, 215 (03) :567-572

[5]

BEDNORZ JG, 1986, Z PHYS B, V64, P188

[6] MONTE-CARLO CALCULATIONS OF COUPLED BOSON-FERMION SYSTEMS .1. [J].

BLANKENBECLER, R ;

SCALAPINO, DJ ;

SUGAR, RL .

PHYSICAL REVIEW D, 1981, 24 (08) :2278-2286

[7] HUBBARD-MODEL WITH ONE HOLE - GROUND-STATE PROPERTIES [J].

DAGOTTO, E ;

MOREO, A ;

BARNES, T .

PHYSICAL REVIEW B, 1989, 40 (10) :6721-6725

[8] PHASE-DIAGRAM OF THE FRUSTRATED SPIN-1/2 HEISENBERG-ANTIFERROMAGNET IN 2 DIMENSIONS [J].

DAGOTTO, E ;

MOREO, A .

PHYSICAL REVIEW LETTERS, 1989, 63 (19) :2148-2151

[9]

DAGOTTO E, IN PRESS PHYS REV B

[10] TWO-DIMENSIONAL HUBBARD-MODEL - NUMERICAL-SIMULATION STUDY [J].

HIRSCH, JE .

PHYSICAL REVIEW B, 1985, 31 (07) :4403-4419

← 1 2 →