RENORMALIZED THEORY OF REPULSIVE BOSONS IN 2-DIMENSIONS

被引：6

作者：

CHANG, CC ^{[1
]}

FRIEDBERG, R ^{[1
]}

机构：

[1] COLUMBIA UNIV BARNARD COLL,DEPT PHYS,NEW YORK,NY 10027

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.51.1117

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The standard perturbation theory for repulsive bosons breaks down at finite temperature in two dimensions because of the vanishing of both the Bose-Einstein condensate (at finite temperature) and the t matrix at long wavelengths and zero particle density. By adopting polar coordinates and using a running coupling constant, we circumvent the above two difficulties. The resulting theory is more straightforward than an earlier one of Popov which depends on an artificial division of momentum space. It can also be applied to three dimensions. © 1995 The American Physical Society.

引用

页码：1117 / 1123

页数：7

共 11 条

[1]

ADHIKARI SK, 1973, AM J PHYS C, V6, P1181

[2]

[Anonymous], ZH EKSP TEOR FIZ+

[3]

Brown L.S., 1992, QUANTUM FIELD THEORY

[4] T-MATRIX IN HARD-CORE 2-BODY SCATTERING IN 3-DIMENSION AND 2-DIMENSION [J].

CHANG, CC ;

FRIEDBERG, R .

PHYSICAL REVIEW A, 1994, 49 (02) :913-920

[5] RADIATIVE-CORRECTIONS AS ORIGIN OF SPONTANEOUS SYMMETRY BREAKING [J].

COLEMAN, S ;

WEINBERG, E .

PHYSICAL REVIEW D, 1973, 7 (06) :1888-1910

[6]

FRIEDBERG R, UNPUB

[7] EXISTENCE OF LONG-RANGE ORDER IN 1 AND 2 DIMENSIONS [J].

HOHENBERG, PC .

PHYSICAL REVIEW, 1967, 158 (02) :383-+

[8] GROUND-STATE ENERGY AND EXCITATION SPECTRUM OF A SYSTEM OF INTERACTING BOSONS [J].

HUGENHOLTZ, NM ;

PINES, D .

PHYSICAL REVIEW, 1959, 116 (03) :489-506

[9]

Popov V. N., 1973, Theoretical and Mathematical Physics, V11, P565, DOI 10.1007/BF01028373

[10]

Popov V. N., 1983, FUNCTIONAL INTEGRALS

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