论文标题
在Breitenlohner中的Weyl Fermions的痕迹异常 - $γ_*$的麦克海方案
Trace anomaly of Weyl fermions in the Breitenlohner--Maison scheme for $γ_*$
论文作者
论文摘要
我们在四个维度上重新审视Weyl fermion的共形异常，这是最近引起了一些辩论的四个维度。我们对Minkowski空间周围的度量，尺寸正则化和Breitenlohner-手性$γ$矩阵的处方采用了扰动扩展。我们在四个维度上获得了Weyl Fermions的消失奇数贡献，而偶数贡献正好是Dirac Fermion的一半。
We revisit the conformal anomaly for a Weyl fermion in four dimensions that has generated some debate recently. We employ a perturbative expansion for the metric around Minkowski space, dimensional regularization and a Breitenlohner--Maison prescription for the chiral $γ$ matrix. We obtain a vanishing odd-parity contribution for Weyl fermions in four dimensions, while the even-parity contribution is exactly half the one for a Dirac fermion.
