On the low-energy spectrum of an SU(2) gauge theory with dynamical fermions

Phys. Rev. D 98, 095030 (2018) The spectrum of light bound states in an SU(2) gauge theory with two flavors of fundamentally charged fermions is investigated by solving the Bethe-Salpeter equations in the respective channels within a 3PI-type (i.e., beyond rainbow-ladder) truncation including self-c...

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Bibliographic Details
Main Authors Vujinovic, Milan, Alkofer, Reinhard
Format Journal Article
LanguageEnglish
Published 07.09.2018
Subjects
Physics - High Energy Physics - Phenomenology
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Summary:Phys. Rev. D 98, 095030 (2018) The spectrum of light bound states in an SU(2) gauge theory with two flavors of fundamentally charged fermions is investigated by solving the Bethe-Salpeter equations in the respective channels within a 3PI-type (i.e., beyond rainbow-ladder) truncation including self-consistently a correspondingly truncated fermion--gauge-boson vertex. Remarkable differences with respect to the meson spectrum of an SU(3) gauge theory are found although in our approach these are not as pronounced as indicated by some recent respective investigations within lattice gauge field theory.
DOI:10.48550/arxiv.1809.02650