QUANTUM-MECHANICS OF THE FRACTIONAL-STATISTICS GAS - RANDOM-PHASE APPROXIMATION

被引：37

作者：

DAI, Q

LEVY, JL

FETTER, AL

HANNA, CB

LAUGHLIN, RB

机构：

[1] IBM CORP,THOMAS J WATSON RES CTR,DIV RES,YORKTOWN HTS,NY 10598

[2] LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550

来源：

PHYSICAL REVIEW B | 1992年 / 46卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.46.5642

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A description of the fractional-statistics gas based on the complete summation of Hartree, Fock, ladder and bubble diagrams is presented. The superfluid properties identified previously in the random-phase-approximation (RPA) calculation of Fetter, Hanna, and Laughlin [Phys. Rev. B 39, 9679 (1989)] are substantially confirmed. The discrepancy between the RPA sound speed and the Hartree-Fock bulk modulus is found to be eliminated. The unusual Hall-effect behavior is found to vanish for the Bose gas test case but not for the fractional-statistics gas, implying that it is physically correct. Excellent agreement is obtained with the collective-mode dispersion obtained numerically by Xie, He, and Das Sarma [Phys. Rev. Lett. 65, 649 (1990)].

引用

页码：5642 / 5677

页数：36

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