THE EXACT MASS GAP OF THE O(3) AND O(4) NONLINEAR SIGMA-MODELS IN D=2

被引：211
作者：
HASENFRATZ, P
MAGGIORE, M
NIEDERMAYER, F
机构：
[1] Institute for Theoretical Physics, University of Bern, CH-3012 Bern
来源：
PHYSICS LETTERS B | 1990年 / 245卷 / 3-4期
关键词：
D O I：
10.1016/0370-2693(90)90685-Y
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
By comparing the Bethe Ansatz solution with perturbation theory we obtain the exact results m = 8 e ΛMS and m = ( 32 πe) 1 2 ΛMS for the O(3) and O(4) non-linear σ-models, respectively. Here ΛMS is the renormalization group invariant scale in the MS scheme. © 1990.
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页码：522 / 528
页数：7
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