THE EXACT MASS GAP OF THE O(3) AND O(4) NONLINEAR SIGMA-MODELS IN D=2
THE EXACT MASS GAP OF THE O(3) AND O(4) NONLINEAR SIGMA-MODELS IN D=2
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DOI:
10.1016/0370-2693(90)90685-y
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发表时间:
1990-08-16
影响因子:
4.4
通讯作者:
NIEDERMAYER, F
中科院分区:
文献类型:
--
作者:
HASENFRATZ, P;MAGGIORE, M;NIEDERMAYER, F
By comparing the Bethe Ansatz solution with perturbation theory we obtain the exact results m = 8 e ΛMSand m = ( 32 π e )1 2ΛMSfor the O(3) and O(4) non-linear σ-models, respectively. Here ΛMSis the renormalization group invariant scale in the MS scheme.