Trace anomaly of Weyl fermions in the Breitenlohner--Maison scheme for $\gamma_*$

Autor:	Abdallah, S., Franchino-Viñas, S. A, Fröb, M. B.
Rok vydání:	2022
Předmět:	High Energy Physics - Theory Mathematical Physics
Zdroj:	PoS EPS-HEP2021 (2022) 723
Druh dokumentu:	Working Paper
DOI:	10.22323/1.398.0723
Popis:	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 $\gamma$ 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. Comment: v2 contains a note with additional references/comments added after the publication of the proceedings. 8 pages, 2 figures, contribution to The European Physical Society Conference on High Energy Physics (EPS-HEP2021)
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2202.10813 Zobrazit plný text záznamu View this record from Arxiv