ON THE LARGE NF LIMIT OF CHIRAL PERTURBATION-THEORY

被引：24

作者：

DOBADO, A

PELAEZ, JR

机构：

[1] Departamento de Física Teórica, Universidad Complutense de Madrid

来源：

PHYSICS LETTERS B | 1992年 / 286卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(92)90171-Y

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this letter we show how it is possible to obtain the large N(f) limit of chiral perturbation theory (chi-PT) in the chiral limit. In particular, we compute explicitly the Nambu-Goldstone boson (NGB) elastic scattering amplitude to leading order in 1/N (N being the number of NGB fields) to all powers in the external momenta. This amplitude is unitary to order 1/N and it can incorporate resonant behavior. The price to pay is the introduction of an infinite set of renormalized coupling constants that can be summarized in a single generating function. Playing with these constants, it is possible to simulate the linear sigma model and many others in the same large N limit.

引用

页码：136 / 146

页数：11

共 33 条

[1] STRONGLY INTERACTING HIGGS BOSONS [J].