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  Manifestly gauge-covariant representation of scalar and fermion propagators

Latosinski, A. (2016). Manifestly gauge-covariant representation of scalar and fermion propagators. Physical Review D, 93: 025031. doi:10.1103/PhysRevD.93.025031.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-FE60-0 Version Permalink: http://hdl.handle.net/21.11116/0000-0002-F664-8
Genre: Journal Article

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 Creators:
Latosinski, Adam1, Author
Affiliations:
1AEI-Golm, MPI for Gravitational Physics, Max Planck Society, Golm, DE, ou_24008              

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Free keywords: High Energy Physics - Theory, hep-th
 Abstract: A new way to write the massive scalar and fermion propagators on a background of a weak gauge field is presented. They are written in a form that is manifestly gauge-covariant up to several additional terms that can be written as boundary terms in momentum space. These additional terms violate Ward-Takahashi identities and need to be renormalized by appropriate counterterms if the complete theory is to be gauge-covariant. This form makes it possible to calculate many amplitudes in a manifestly gauge-covariant way (at the same time reducing the number of Feynman diagrams). It also allows to express some counterterms in a way independent of the regularization scheme and provides an easy way to derive the anomalous term affecting the chiral current conservation.

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 Dates: 2015-09-042016
 Publication Status: Published in print
 Pages: 20 pages
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1509.01414
URI: http://arxiv.org/abs/1509.01414
DOI: 10.1103/PhysRevD.93.025031
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Title: Physical Review D
  Other : Phys. Rev. D.
Source Genre: Journal
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Publ. Info: Lancaster, Pa. : American Physical Society
Pages: - Volume / Issue: 93 Sequence Number: 025031 Start / End Page: - Identifier: ISSN: 0556-2821
CoNE: /journals/resource/111088197762258