THETA-VACUA, CONFINEMENT AND THE CONTINUUM-LIMIT

被引：16
|
作者：
SCHIERHOLZ, G [1 ]
机构：
[1] FORSCHUNGSZENTRUM JULICH, HOCHSTLEISTUNGSRECHENZENTRUM HLRZ, THEORIE ELEMENTARTEILCHEN GRP, D-52425 JULICH, GERMANY
来源：
NUCLEAR PHYSICS B | 1995年
关键词：
D O I：
10.1016/0920-5632(95)00223-V
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 the dependence of the CP3 model and of the SU(2) Yang-Mills theory on the vacuum angle theta. The CP3 model exhibits a first order deconfining phase transition in theta. The critical value of a runs from sr in the strong coupling limit towards zero as beta is taken to infinity. Qualitatively the same behavior is found in the SU(2) Yang-Mills theory in four dimensions. We discuss the renormalization group trajectories. Only the line with theta = 0 allows the cut-off to go to infinity, while the lines with theta > 0 end on the line of first order phase transitions. Thus theta is forced to zero in the continuum limit.
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页码：270 / 272
页数：3
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