Practical corollaries of transverse Ward–Green–Takahashi identities
- The gauge principle is fundamental in formulating the Standard Model. Fermion–gauge-boson couplings are the inescapable consequence and the primary determining factor for observable phenomena. Vertices describing such couplings are simple in perturbation theory and yet the existence of strong-interaction bound-states guarantees that many phenomena within the Model are nonperturbative. It is therefore crucial to understand how dynamics dresses the vertices and thereby fundamentally alters the appearance of fermion–gauge-boson interactions. We consider the coupling of a dressed-fermion to an Abelian gauge boson, and describe a unified treatment and solution of the familiar longitudinal Ward–Green–Takahashi identity and its less well known transverse counterparts. Novel consequences for the dressed-fermion–gauge-boson vertex are exposed.
Author: | Si-xue QinORCiD, Lei ChangORCiD, Yu-xin LiuGND, Craig D. RobertsORCiD, Sebastian M. SchmidtORCiDGND |
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URN: | urn:nbn:de:hebis:30:3-767585 |
DOI: | https://doi.org/10.1016/j.physletb.2013.04.034 |
ISSN: | 0370-2693 |
Parent Title (English): | Physics Letters B |
Publisher: | Elsevier |
Place of publication: | Amsterdam |
Document Type: | Article |
Language: | English |
Date of Publication (online): | 2013/04/17 |
Date of first Publication: | 2013/04/17 |
Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
Release Date: | 2023/10/19 |
Tag: | Dynamical chiral symmetry breaking; Dyson–Schwinger equations; Fermion–gauge-boson vertex; Quantum electrodynamics |
Volume: | 722.2013 |
Issue: | 4 |
Page Number: | 5 |
First Page: | 384 |
Last Page: | 388 |
HeBIS-PPN: | 517560933 |
Institutes: | Physik |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Sammlungen: | Universitätspublikationen |
Licence (German): | Creative Commons - Namensnennung 3.0 |