| Aspects of the confinement mechanism in Coulomb-gauge QCD. | |
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MedLine Citation:
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PMID: 16486561 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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Phenomenological consequences of the infrared singular, instantaneous part of the gluon propagator in the Coulomb gauge are investigated. The corresponding quark Dyson-Schwinger equation is solved, neglecting retardation and transverse gluons and regulating the resulting infrared singularities. While the quark propagator vanishes as the infrared regulator goes to zero, the frequency integral over the quark propagator stays finite and well defined. Solutions of the homogeneous Bethe-Salpeter equation for the pseudoscalar and vector mesons as well as for scalar and axial-vector diquarks are obtained. In the limit of a vanishing infrared regulator the diquark masses diverge, while meson properties and diquark radii remain finite and well defined. These features are interpreted with respect to the resulting aspects of confinement for colored quark-quark correlations. |
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Authors:
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R Alkofer; M Kloker; A Krassnigg; R F Wagenbrunn |
Publication Detail:
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Type: Journal Article Date: 2006-01-18 |
Journal Detail:
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Title: Physical review letters Volume: 96 ISSN: 0031-9007 ISO Abbreviation: Phys. Rev. Lett. Publication Date: 2006 Jan |
Date Detail:
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Created Date: 2006-02-20 Completed Date: 2006-05-22 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0401141 Medline TA: Phys Rev Lett Country: United States |
Other Details:
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Languages: eng Pagination: 022001 Citation Subset: - |
Affiliation:
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Institut für Physik, University of Graz, A-8010 Graz, Austria. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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