EFFECTIVE LATTICE ACTIONS FOR CORRELATED ELECTRONS

被引：13

作者：

ANGELUCCI, A ^{[1
]}

机构：

[1] UNIV WURZBURG,INST THEORET PHYS,D-97074 WURZBURG,GERMANY

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.51.11580

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present an exact, unconstrained representation of the electron operators in terms of operators of opposite statistics. We propose a path-integral representation for the t-J model and introduce a parameter controlling the semiclassical behavior. We extend the functional approach to the Hubbard model and show that the mean-field theory is equivalent to considering, at Hamiltonian level, the Falikov-Kimball model. Connections with a bond-charge model are also discussed. © 1995 The American Physical Society.

引用

页码：11580 / 11583

页数：4

共 20 条

[1] PHASE-SEPARATION IN THE LARGE-SPIN T-J MODEL [J].

ANGELUCCI, A ;

SORELLA, S .

PHYSICAL REVIEW B, 1993, 47 (14) :8858-8867

[2] LARGE PHYSICAL SPIN APPROACH FOR STRONGLY CORRELATED ELECTRONS [J].

ANGELUCCI, A ;

SORELLA, S ;

POIBLANC, D .

PHYSICS LETTERS A, 1995, 198 (02) :145-150

[3]

AUERBACH A, 1991, PHYS REV LETT, V66, P2269

[4] ELECTRONIC MODEL FOR SUPERCONDUCTIVITY [J].

ESSLER, FHL ;

KOREPIN, VE ;

SCHOUTENS, K .

PHYSICAL REVIEW LETTERS, 1993, 70 (01) :73-76

[5] NEW EXACTLY SOLVABLE MODEL OF STRONGLY CORRELATED ELECTRONS MOTIVATED BY HIGH-TC SUPERCONDUCTIVITY [J].

ESSLER, FHL ;

KOREPIN, VE ;

SCHOUTENS, K .

PHYSICAL REVIEW LETTERS, 1992, 68 (19) :2960-2963

[6] ANTIFERROMAGNETIC CORRELATIONS IN ALMOST-LOCALIZED FERMI LIQUIDS [J].

GROS, C ;

JOYNT, R ;

RICE, TM .

PHYSICAL REVIEW B, 1987, 36 (01) :381-393

[7] O(3) NONLINEAR SIGMA-MODEL AND THE TOPOLOGICAL DISTINCTION BETWEEN INTEGER-SPIN AND HALF-INTEGER-SPIN ANTIFERROMAGNETS IN 2 DIMENSIONS [J].

HALDANE, FDM .

PHYSICAL REVIEW LETTERS, 1988, 61 (08) :1029-1032

[8]

ITZYKSON C, 1989, STATISTICAL FIELD TH, V1

[9] MOTION OF A SINGLE HOLE IN A QUANTUM ANTIFERROMAGNET [J].

KANE, CL ;

LEE, PA ;

READ, N .

PHYSICAL REVIEW B, 1989, 39 (10) :6880-6897

[10] AN ITINERANT ELECTRON MODEL WITH CRYSTALLINE OR MAGNETIC LONG-RANGE ORDER [J].

KENNEDY, T ;

LIEB, EH .

PHYSICA A, 1986, 138 (1-2) :320-358

← 1 2 →