| THE PHYSICS OF ELEMENTARY PARTICLES AND FIELDS |
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Wigner Solution to the Quark Gap Equation in the Nonzero Current Quark Mass |
| JIANG Yu1,GONG Hao2,SUN Wei-Min2,3,ZONG Hong-Shi2,3** |
1Center for Statistical and Theoretical Condensed Matter Physics, Zhejiang Normal University, Jinhua 321004
2Department of Physics, Nanjing University, Nanjing 210093
3Joint Center for Particle, Nuclear Physics and Cosmology, Nanjing 210093 |
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| Cite this article: |
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JIANG Yu, GONG Hao, SUN Wei-Min et al 2012 Chin. Phys. Lett. 29 041201 |
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Abstract From the graphical representation of the Dyson–Schwinger equation for the dressed gluon propagator it is shown that the gluon propagator in the Wigner phase should be different from that in the Nambu phase. Based on this analysis, we propose a modified gluon propagator to reflect this fact. With such a modified gluon propagator, in the framework of the Nambu–Jona–Lasinio (NJL) model, we obtain the Wigner solution to the quark gap equation at finite current quark mass, which has not been found in literature. This provides a new point of view to study partial restoration of chiral symmetry at finite temperature and chemical potential.
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Received: 29 December 2011
Published: 04 April 2012
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| PACS: |
12.38.Mh
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(Quark-gluon plasma)
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12.39.-x
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(Phenomenological quark models)
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25.75.Nq
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(Quark deconfinement, quark-gluon plasma production, and phase transitions)
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