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Title: Gluons and the NJL coupling constant

The QCD origin of the NJL model is re-analysed by considering the gluon condensate of order two . The key point is the treatment of the gluon interactions. To linearize the action the auxiliary variable method is employed to introduce a scalar variable φ(x) that yield such condensate by means of its value in the vacuum, and then another auxiliary variable that corresponds to an antisymmetric gluon configuration φ(x). For that, besides that, two different possible limits of the fourth order non local quark interaction that may contribute to the NJL coupling are compared.
Authors:
;  [1] ;  [2]
  1. Instituto de Física, Univ. Fed. de Goiás, P.B.131, Campus II, 74001-970, Goiânia, GO (Brazil)
  2. Instituto de Física, Univ. Fed. de Goiás, P.B.131, Campus II, 74001-970, Goiânia, GO, Brazil and Instituto Federal de Educação, Ciência e Tecnologia do Tocantins, Palmas, TO (Brazil)
Publication Date:
OSTI Identifier:
22390483
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1625; Journal Issue: 1; Conference: 36. Brazilian Workshop on Nuclear Physics, Sao Sebastiao, SP (Brazil), 1-5 Sep 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; COMPARATIVE EVALUATIONS; COUPLING CONSTANTS; GLUON CONDENSATION; GLUONS; QUANTUM CHROMODYNAMICS; QUARK-QUARK INTERACTIONS; QUARKS