QCD chiral symmetry restoration with a large number of quarks in a model with a confining propagator and dynamically massive gluons

Author(s)

Capdevilla, R. M. ^{[1, 2]} ; Doff, A. ^[3] ; Natale, A. A. ^{[4, 2]}

Affiliation

^[1] Univ Notre Dame, Dept Phys, South Bend, IN 46556 - USA

^[2] UNESP Univ Estadual Paulista, Inst Fis Teor, BR-01140070 Sao Paulo, SP - Brazil

^[3] Univ Tecnol Fed Parana UTFPR DAFIS, BR-84016210 Ponta Grossa, PR - Brazil

^[4] Univ Fed ABC, Ctr Ciencias Nat & Humanas, BR-09210170 Santo Andre, SP - Brazil

• Document type: Journal article
• Source: Physics Letters B; v. 744, p. 325-329, MAY 11 2015.
• Web of Science Citations: 5

Abstract

Considering a QCD chiral symmetry breaking model where the gap equation contains an effective confining propagator and a dressed gluon propagator with a dynamically generated mass, we verify that the chiral symmetry is restored for a large number of quarks n(f) approximate to 7 - 13. We discuss the uncertainty in the results, that is related to the determination of the string tension (K-F), appearing in the confining propagator, and the effective gluon mass (m(g)) at large n(f). (C) 2015 The Authors. Published by Elsevier B.V. (AU)

• FAPESP's process: 13/22079-8 - Physics of particles and fields: standard model and its extensions
• Grantee: Adriano Antonio Natale
• Support Opportunities: Research Projects - Thematic Grants