Trace anomaly of Weyl fermions in the Breitenlohner--Maison scheme for $γ_*$
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arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2022
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| Acceso en línea: | |
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| _version_ | 1866916469266186240 |
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| author | Abdallah, S. Franchino-Viñas, S. A Fröb, M. B. |
| author_facet | Abdallah, S. Franchino-Viñas, S. A Fröb, M. B. |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2202_10813 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Trace anomaly of Weyl fermions in the Breitenlohner--Maison scheme for $γ_*$ Abdallah, S. Franchino-Viñas, S. A Fröb, M. B. High Energy Physics - Theory Mathematical Physics 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. |
| title | Trace anomaly of Weyl fermions in the Breitenlohner--Maison scheme for $γ_*$ |
| topic | High Energy Physics - Theory Mathematical Physics |
| url | https://arxiv.org/abs/2202.10813 |