PERTURBATION-THEORY IN TERMS OF CURRENTS AND RESTORATION OF CONTINUOUS SYMMETRY IN 2 DIMENSIONS

被引：12

作者：

JEVICKI, A

机构：

[1] Institute for Advanced Study, Princeton

来源：

NUCLEAR PHYSICS B | 1978年 / 146卷 / 01期

关键词：

D O I：

10.1016/0550-3213(78)90433-9

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We discuss a formulation of perturbation theory for two-dimensional field theories which possess a spontaneous symmetry breaking at the classical level. It is useful to employ the formalism in terms of currents, and then one is able to restore the continuous symmetries which, according to general theorems, cannot be spontaneously broken at the full quantum level. As a prototype example we consider in detail the non-linear Schrodinger theory at finite density. Some observations concerning theories with non-Abelian symmetry are made. © 1978.

引用

页码：77 / 89

页数：13

共 38 条

[31] FIELD THEORY OF CURRENTS [J].