STRONG-COUPLING EXPANSIONS FOR THE ATTRACTIVE HOLSTEIN AND HUBBARD MODELS

被引：48

作者：

FREERICKS, JK ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW B | 1993年 / 48卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.48.3881

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A strong-coupling expansion for the Holstein (electron-phonon) model is carried out through fourth order. In the large-frequency limit the expansion agrees with known results for the attractive Hubbard model. Mean-field theory is employed to determine transition temperatures of the effective (pseudospin) Hamiltonian and the results are compared with recent Monte Carlo simulations of these models in infinite dimensions.

引用

页码：3881 / 3891

页数：11

共 43 条

[1] BIPOLARONIC SUPERCONDUCTIVITY - THERMODYNAMICS, MAGNETIC-PROPERTIES, AND POSSIBILITY OF EXISTENCE IN REAL SUBSTANCES [J].

ALEXANDROV, AS ;

RANNINGER, J ;

ROBASZKIEWICZ, S .

PHYSICAL REVIEW B, 1986, 33 (07) :4526-4542

[2] NEW APPROACH TO THE THEORY OF SUPEREXCHANGE INTERACTIONS [J].

ANDERSON, PW .

PHYSICAL REVIEW, 1959, 115 (01) :2-13

[3] LOW-TEMPERATURE PROPERTIES OF ONE-DIMENSIONAL POLARON BAND .1. EXTREME-BAND-NARROWING REGIME [J].

BENI, G ;

PINCUS, P ;

KANAMORI, J .

PHYSICAL REVIEW B, 1974, 10 (05) :1896-1901

[4] CONSERVING APPROXIMATIONS FOR STRONGLY FLUCTUATING ELECTRON-SYSTEMS .1. FORMALISM AND CALCULATIONAL APPROACH [J].

BICKERS, NE ;

SCALAPINO, DJ .

ANNALS OF PHYSICS, 1989, 193 (01) :206-251

[5] POLARON ORIGIN FOR ANHARMONICITY OF THE AXIAL OXYGEN IN YBA2CU3O7 [J].

DELEON, JM ;

BATISTIC, I ;

BISHOP, AR ;

CONRADSON, SD ;

TRUGMAN, SA .

PHYSICAL REVIEW LETTERS, 1992, 68 (21) :3236-3239

[6] CU-O CHARGE FLUCTUATIONS AND ELECTRON-PHONON COUPLING IN THE EFFECTIVE SINGLE-BAND HUBBARD THEORY FOR CUPRATE SUPERCONDUCTORS [J].

FEDRO, AJ ;

SCHUTTLER, HB .

PHYSICA C, 1991, 185 (pt 3) :1673-1674

[7]

FREERICKS JK, IN PRESS PHYS REV B

[8] ANTIFERROMAGNETISM AND ANTIFERROMAGNETIC RESONANCE IN A RHOMBIC CRYSTAL AT T=O [J].

GORTER, CJ .

REVIEWS OF MODERN PHYSICS, 1953, 25 (01) :277-278

[9]

GROEGES A, 1992, PHYS REV LETT, V69, P1240

[10]

GROEGES A, UNPUB

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