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QCD in the color-flow representation
Zitieren Sie bitte immer diese URN: urn:nbn:de:bvb:20-opus-129583
- For many practical purposes, it is convenient to formulate unbroken non-abelian gauge theories like QCD in a color-flow basis. We present a new derivation of SU(N) interactions in the color-flow basis by extending the gauge group to U(N) × U(1)′ in such a way that the two U(1) factors cancel each other. We use the quantum action principles to show the equivalence to the usual basis to all orders in perturbation theory. We extend the known Feynman rules to exotic color representations (e.g. sextets) and discuss practical applications as theyFor many practical purposes, it is convenient to formulate unbroken non-abelian gauge theories like QCD in a color-flow basis. We present a new derivation of SU(N) interactions in the color-flow basis by extending the gauge group to U(N) × U(1)′ in such a way that the two U(1) factors cancel each other. We use the quantum action principles to show the equivalence to the usual basis to all orders in perturbation theory. We extend the known Feynman rules to exotic color representations (e.g. sextets) and discuss practical applications as they occur in automatic computation programs.…
Autor(en): | W. Kilian, T. Ohl, J. Reuter, C. Speckner |
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URN: | urn:nbn:de:bvb:20-opus-129583 |
Dokumentart: | Artikel / Aufsatz in einer Zeitschrift |
Institute der Universität: | Fakultät für Physik und Astronomie / Institut für Theoretische Physik und Astrophysik |
Sprache der Veröffentlichung: | Englisch |
Titel des übergeordneten Werkes / der Zeitschrift (Englisch): | Journal of High Energy Physics |
Erscheinungsjahr: | 2012 |
Band / Jahrgang: | 10 |
Heft / Ausgabe: | 022 |
Originalveröffentlichung / Quelle: | Journal of High Energy Physics 10 (2012) 022. DOI:10.1007/JHEP10(2012)022 |
DOI: | https://doi.org/10.1007/JHEP10(2012)022 |
ArXiv-ID: | http://arxiv.org/abs/1206.3700 |
Allgemeine fachliche Zuordnung (DDC-Klassifikation): | 5 Naturwissenschaften und Mathematik / 53 Physik / 539 Moderne Physik |
Freie Schlagwort(e): | 1/N expansion; QCD; scattering amplitudes |
Datum der Freischaltung: | 24.11.2016 |
Lizenz (Deutsch): | CC BY: Creative-Commons-Lizenz: Namensnennung |