Exact Drude weight for the one-dimensional Hubbard model at finite temperatures

被引：72

作者：

Fujimoto, S

Kawakami, N

机构：

[1] Univ Oxford, Dept Phys Theoret Phys, Oxford OX1 3NP, England

[2] Kyoto Univ, Dept Phys, Kyoto 606, Japan

[3] Osaka Univ, Dept Appl Phys, Osaka 565, Japan

来源：

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL | 1998年 / 31卷 / 02期

关键词：

D O I：

10.1088/0305-4470/31/2/008

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The Drude weight for the one-dimensional Hubbard model is investigated at finite temperatures by using the Bethe ansatz solution. Evaluating finite-size corrections to the thermodynamic Bethe ansatz equations, we obtain the formula fbr the Drude weight as the response of the system to an external gauge potential. We perform low-temperature expansions of the Drude weight in the case of half-filling as well as away from half-filling, which clearly distinguish the Mott-insulating state from the metallic state.

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页码：465 / 474

页数：10

相关论文

共 25 条

[1] DIAGONALIZATION OF THE KONDO-HAMILTONIAN [J].

ANDREI, N .

PHYSICAL REVIEW LETTERS, 1980, 45 (05) :379-382

[2] OPERATOR DIMENSIONS AND SURFACE EXPONENTS FOR THE NON-LINEAR SCHRODINGER MODEL AT T=0 [J].

BERKOVICH, A ;

MURTHY, G .

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1988, 21 (19) :3703-3721

[3]

BEYERS N, 1961, PHYS REV LETT, V7, P46

[4] INTEGRABILITY AND IDEAL CONDUCTANCE AT FINITE TEMPERATURES [J].

CASTELLA, H ;

ZOTOS, X ;

PRELOVSEK, P .

PHYSICAL REVIEW LETTERS, 1995, 74 (06) :972-975

[5] CRITICAL EXPONENTS FOR THE ONE-DIMENSIONAL HUBBARD-MODEL [J].

FRAHM, H ;

KOREPIN, VE .

PHYSICAL REVIEW B, 1990, 42 (16) :10553-10565

[6] CORRELATION-FUNCTIONS OF THE ONE-DIMENSIONAL HUBBARD-MODEL IN A MAGNETIC-FIELD [J].

FRAHM, H ;

KOREPIN, VE .

PHYSICAL REVIEW B, 1991, 43 (07) :5653-5662

[7] PERSISTENT CURRENTS IN A ONE-DIMENSIONAL RING FOR A DISORDERED HUBBARD-MODEL [J].

GIAMARCHI, T ;

SHASTRY, BS .

PHYSICAL REVIEW B, 1995, 51 (16) :10915-10922

[8] EXACT EXPRESSION OF THE GROUND-STATE ENERGY FOR THE SYMMETRIC ANDERSON MODEL [J].

KAWAKAMI, N ;

OKIJI, A .

PHYSICS LETTERS A, 1981, 86 (09) :483-486

[9] CONDUCTIVITY IN ONE-DIMENSIONAL HIGHLY CORRELATED ELECTRON-SYSTEMS [J].

KAWAKAMI, N ;

YANG, SK .

PHYSICAL REVIEW B, 1991, 44 (15) :7844-7851

[10] LUTTINGER ANOMALY EXPONENT OF MOMENTUM DISTRIBUTION IN THE HUBBARD CHAIN [J].

KAWAKAMI, N ;

YANG, SK .

PHYSICS LETTERS A, 1990, 148 (6-7) :359-362