Structure functions of the 2d O(n) non-linear sigma models

被引：4

作者：

Balog, J

Weisz, P

机构：

[1] Res Inst Particle & Nucl Phys, H-1525 Budapest 114, Hungary

[2] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany

来源：

NUCLEAR PHYSICS B | 2005年 / 709卷 / 1-2期

关键词：

D O I：

10.1016/j.nuclphysb.2004.12.017

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 investigate structure functions in the 2-dimensional (asymptotically free) non-linear O(n) sigma-models using the non-perturbative S-matrix bootstrap program. In particular, the exact small (Bjorken) x behavior is derived. Structure functions in the special case of the n = 3 model are accurately computed over the whole x range for -q(2)/M-2 < 10(5), and some moments are compared with results from renormalized perturbation theory. Some results concerning the structure functions in the 1/n approximation are also presented. (C) 2005 Elsevier B.V. All rights reserved.

引用

页码：329 / 380

页数：52

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