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
期刊:
影响因子:
4.4
通讯作者:
NIEDERMAYER, F
NIEDERMAYER, F
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
HASENFRATZ, P;MAGGIORE, M;NIEDERMAYER, F

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通过比较Bethe Ansatz解和摄动理论,我们分别得到了O(3)和O(4)非线性σ-模型的精确结果m = 8 e ΛMSand m = (32 π e)1 2ΛMSfor。这里ΛMSis是MS方案中的重整化群不变尺度。
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.