The nested SU(N) off-shell Bethe ansatz and exact form factors

被引：20

作者：

Babujian, H. ^{[1
]}

Foerster, A. ^{[2
]}

Karowski, M. ^{[3
]}

机构：

[1] Yerevan Phys Inst, Yerevan 0036, Armenia

[2] Univ Fed Rio Grande do Sul, Inst Fis, Porto Alegre, RS, Brazil

[3] Free Univ Berlin, Inst Theoret Phys, D-14195 Berlin, Germany

来源：

JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL | 2008年 / 41卷 / 27期

关键词：

D O I：

10.1088/1751-8113/41/27/275202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The form factor equations are solved for a SU( N) invariant S-matrix under the assumption that the anti-particle is identified with the bound state of N - 1 particles. The solution is obtained explicitly in terms of the nested off-shell Bethe ansatz where the contribution from each level is written in terms of multiple contour integrals. The general solution is illustrated for some operators, such as the energy-momentum tensor, the fields and the current.

引用

页数：21

共 43 条

[1] Exact form factors in integrable quantum field theories:: the scaling Z(N)-Ising model [J].