Chiral symmetry breaking revisited: the gap equation with lattice ingredients

Journal Article · Mon May 23 00:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3575029· OSTI ID:21513321

Aguilar, Arlene C ^[1]

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1. Federal University of ABC, CCNH, Rua Santa Adelia 166, CEP 09210-170, Santo Andre (Brazil)

We study chiral symmetry breaking in QCD, using as ingredients in the quark gap equation recent lattice results for the gluon and ghost propagators. The Ansatz employed for the quark-gluon vertex is purely non-Abelian, introducing a crucial dependence on the ghost dressing function and the quark-ghost scattering amplitude. The numerical impact of these quantities is considerable: the need to invoke confinement explicitly is avoided, and the dynamical quark masses generated are of the order of 300 MeV. In addition, the pion decay constant and the quark condensate are computed, and are found to be in good agreement with phenomenology.

• OSTI ID: 21513321
• Journal Information: AIP Conference Proceedings, Vol. 1343, Issue 1; Conference: QCHS 9: 9. international conference on quark confinement and the hadron spectrum, Madrid (Spain), 30 Aug - 3 Sep 2010; Other Information: DOI: 10.1063/1.3575029; (c) 2011 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHIRAL SYMMETRY
CONFINEMENT
GLUONS
LATTICE FIELD THEORY
MASS
MASS RENORMALIZATION
MEV RANGE 100-1000
PARTICLE DECAY
PIONS
PROPAGATOR
QUANTUM CHROMODYNAMICS
QUARK CONDENSATION
QUARK-GLUON INTERACTIONS
QUARKS
SCATTERING AMPLITUDES
SYMMETRY BREAKING
AMPLITUDES
BOSONS
CONSTRUCTIVE FIELD THEORY
DECAY
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FIELD THEORIES
HADRONS
INTERACTIONS
MESONS
MEV RANGE
PARTICLE INTERACTIONS
PSEUDOSCALAR MESONS
QUANTUM FIELD THEORY
RENORMALIZATION
SYMMETRY