arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2008.13449hep-th
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精确重整化群形式中流算子的乘积

Products of Current Operators in the Exact Renormalization Group Formalism

H. Sonoda

摘要:

给定一个Wilson作用量在整体手征变换下的不变量,我们可以用Wilson作用量构造当前复合算子。当前算子的重积中的短距离奇异性由精确的重整化群处理。Ward-Takahashi恒等式与Wilson作用量的有限动量截断相容。精确的重整化群和Ward-Takahashi恒等式共同决定了乘积。作为一个具体的例子,我们研究了手征费米子的高斯不动点Wilson作用量来构造流算符的乘积。

英文摘要:

Given a Wilson action invariant under global chiral transformations, we can construct current composite operators in terms of the Wilson action. The short distance singularities in the multiple products of the current operators are taken care of by the exact renormalization group. The Ward-Takahashi identity is compatible with the finite momentum cutoff of the Wilson action. The exact renormalization group and the Ward-Takahashi identity together determine the products. As a concrete example, we study the Gaussian fixed-point Wilson action of the chiral fermions to construct the products of current operators.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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