COMMENTS ON THE VACUUM ORIENTATIONS IN QCD
COMMENTS ON THE VACUUM ORIENTATIONS IN QCD
复制标题
对 QCD 中真空方向的评论
DOI：
10.1142/s0217732392002524
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发表时间：
1992
影响因子：
1.4
通讯作者：
D. D. Wu
中科院分区：
文献类型：
--
作者：
Zheng Huang;K. Viswanathan;D. D. Wu
我们研究了QCD真空取向角与强CP相的关系。基于反常Ward恒等式，导出了动态手性对称性破缺的真空对准方程。强调了夸克场的手性旋转引起真空方向的改变和光赝标量发生器的定义的改变。为了说明这一观点，我们在不同的手性框架中仔细研究了η→2π衰变。
We study the QCD vacuum orientation angles in correlation with the strong CP phases. A vacuum alignment equation of the dynamical chiral symmetry breaking is derived based on the anomalous Ward identity. It is emphasized that a chiral rotation of the quark field causes a change of the vacuum orientation and a change in the definition of the light pseudoscalar generators. As an illustration of the idea, η→2π decays are carefully studied in different chiral frames.