TBA equations for excited states in the O(3) and O(4) nonlinear σ-model

被引：39

作者：

Balog, J ^{[1
]}

Hegedüs, A ^{[1
]}

机构：

[1] Hungarian Acad Sci, Res Inst Particle & Nucl Phys, H-1525 Budapest, Hungary

来源：

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL | 2004年 / 37卷 / 05期

关键词：

D O I：

10.1088/0305-4470/37/5/027

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

TBA integral equations are proposed for one-particle states in the sausage and SS models and their or-model limits. Combined with the ground-state TBA equations the exact mass gap is computed in the O(3) and O(4) nonlinear or-model and the results are compared to 3-loop perturbation theory and Monte Carlo data.

引用

页码：1881 / 1901

页数：21

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