dorsal/arxiv
View SchemaDeconfinement at finite chemical potential
| Authors | A. Bender, G. I. Poulis, C. D. Roberts, S. Schmidt, A. W. Thomas |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9710069 |
| URL | https://arxiv.org/abs/nucl-th/9710069 |
| DOI | 10.1016/S0370-2693(98)00546-2 |
| Journal | Phys.Lett.B431:263-269,1998 |
Abstract
In a confining, renormalisable, Dyson-Schwinger equation model of two-flavour QCD we explore the chemical-potential dependence of the dressed-quark propagator, which provides a means of determining the behaviour of the chiral and deconfinement order parameters, and low-energy pion observables. We find coincident, first order deconfinement and chiral symmetry restoration transitions at \mu_c = 375 MeV. f_\pi is insensitive to \mu until \mu \approx \mu_0 = 0.7 mu_c when it begins to increase rapidly. m_\pi is weakly dependent on \mu, decreasing slowly with \mu and reaching a minimum 6% less than its \mu=0 value at \mu=\mu_0. In a two-flavour free-quark gas at \mu=\mu_c the baryon number density would be approximately 3 \rho_0, where \rho_0=0.16 fm^{-3}; while in such a gas at \mu_0 the density is \rho_0.
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"abstract": "In a confining, renormalisable, Dyson-Schwinger equation model of two-flavour\nQCD we explore the chemical-potential dependence of the dressed-quark\npropagator, which provides a means of determining the behaviour of the chiral\nand deconfinement order parameters, and low-energy pion observables. We find\ncoincident, first order deconfinement and chiral symmetry restoration\ntransitions at \\mu_c = 375 MeV. f_\\pi is insensitive to \\mu until \\mu \\approx\n\\mu_0 = 0.7 mu_c when it begins to increase rapidly. m_\\pi is weakly dependent\non \\mu, decreasing slowly with \\mu and reaching a minimum 6% less than its\n\\mu=0 value at \\mu=\\mu_0. In a two-flavour free-quark gas at \\mu=\\mu_c the\nbaryon number density would be approximately 3 \\rho_0, where \\rho_0=0.16\nfm^{-3}; while in such a gas at \\mu_0 the density is \\rho_0.",
"arxiv_id": "nucl-th/9710069",
"authors": [
"A. Bender",
"G. I. Poulis",
"C. D. Roberts",
"S. Schmidt",
"A. W. Thomas"
],
"categories": [
"nucl-th",
"hep-ph"
],
"doi": "10.1016/S0370-2693(98)00546-2",
"journal_ref": "Phys.Lett.B431:263-269,1998",
"title": "Deconfinement at finite chemical potential",
"url": "https://arxiv.org/abs/nucl-th/9710069"
},
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