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arXiv 1612.01151hep-thhep-ph
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${\cal N}$ = $1$ Euler Anomaly,来自RG相关度量-背景

${\cal N}$ = $1$ Euler Anomaly from RG-dependent metric-Background

Vladimir Prochazka, Roman Zwicky

摘要:

我们考虑共形窗口中的${\cal N}=1$超对称规范理论。通过应用一个合适的物质超场重新标度和Weyl变换的重正化组运行(物质和规范场$Z$ -因素)被吸收到度量。后者成为$Z$因子的函数。然后通过自由场论计算得到欧拉流$Δa \equiv a_{\rm UV} - a_{\rm IR} |_{{\cal N}=1}$,其中非平凡动力学来自于在流相关度量中展开欧拉不变量。因此,结果是直接获得的红外异常尺寸确认早期的结果,使用守恒电流的匹配。

英文摘要:

We consider ${\cal N}=1$ supersymmetric gauge theories in the conformal window. By applying a suitable matter superfield rescaling and a Weyl-transformation the renormalisation group running (matter and gauge field $Z$-factors) are absorbed into the metric. The latter becomes a function of the $Z$-factors. The Euler flow $Δa \equiv a_{\rm UV} - a_{\rm IR} |_{{\cal N}=1}$ is then obtained by free field theory computation with the non-trivial dynamics coming from expanding the Euler invariant in the flow dependent metric. The result is therefore directly obtained in terms of the infrared anomalous dimension confirming an earlier result using the matching of conserved currents.

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