SUPERINSTANTONS AND THE RELIABILITY OF PERTURBATION-THEORY IN NON-ABELIAN MODELS

被引：40

作者：

PATRASCIOIU, A ^{[1
]}

SEILER, E ^{[1
]}

机构：

[1] MAX PLANCK INST PHYS & ASTROPHYS, WERNER HEISENBERG INST, D-80805 MUNICH, GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.74.1920

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In dimension D2 the low temperature behavior of systems enjoying a continuous symmetry is dominated by superinstantons: classical configurations of arbitrarily low energy. Perturbation theory in the background of a superinstanton produces thermodynamic answers for the invariant Green's functions that differ from the standard ones, but only in non-Abelian models and only starting at O(1/2). This effect modifies the -function models and persists in the large N limit of the ON models. © 1995 The American Physical Society.

引用

页码：1920 / 1923

页数：4

共 10 条

[1] LATTICE SYSTEMS WITH A CONTINUOUS SYMMETRY .3. LOW-TEMPERATURE ASYMPTOTIC-EXPANSION FOR THE PLANE ROTATOR MODEL [J].

BRICMONT, J ;

FONTAINE, JR ;

LEBOWITZ, JL ;

LIEB, EH ;

SPENCER, T .

COMMUNICATIONS IN MATHEMATICAL PHYSICS, 1981, 78 (04) :545-566

[2] PERTURBATION-THEORY AND ZERO MODES IN O(N) LATTICE SIGMA-MODELS [J].

HASENFRATZ, P .

PHYSICS LETTERS B, 1984, 141 (5-6) :385-388

[3]

KOSTERLITZ JM, 1975, J PHYS-PARIS, V32, P581

[4] GAUSSIAN DOMINANCE ON COMPACT SPIN MANIFOLDS [J].

PATRASCIOIU, A ;

RICHARD, JL .

PHYSICS LETTERS B, 1984, 149 (1-3) :167-170

[5] EXPANDING IN THE GRADIENT AT WEAK-COUPLING [J].

PATRASCIOIU, A .

PHYSICAL REVIEW LETTERS, 1986, 56 (10) :1023-1026

[6] PERCOLATION THEORY AND THE EXISTENCE OF A SOFT PHASE IN 2D SPIN MODELS [J].

PATRASCIOIU, A ;

SEILER, E .

NUCLEAR PHYSICS B, 1993, :184-191

[7]

PATRASCIOIU A, MPIPH9188 REP

[8]

PATRASCIOIU A, AZPHTH9149 REP

[9] ON THE SYMMETRY OF THE GIBBS-STATES IN TWO-DIMENSIONAL LATTICE SYSTEMS [J].

PFISTER, CE .

COMMUNICATIONS IN MATHEMATICAL PHYSICS, 1981, 79 (02) :181-188

[10]

SOKAL A, COMMUNICATION

← 1 →