Deconfinement at finite chemical potential
Date
1998
Authors
Bender, A.
Poulis, G.
Roberts, C.
Schmidt, S.
Thomas, A.
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Type:
Journal article
Citation
Physics Letters B, 1998; 431(3-4):263-269
Statement of Responsibility
A. Bender, G. I. Poulis, C. D. Roberts, S. Schmidt and A. W. Thomas
Conference Name
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 μ<inf>c</inf> = 375 MeV.f<inf>π</inf> is insensitive to μ until μ ≈ μ<inf>0</inf>: = 0.7 μ<inf>c</inf> when it begins to increase rapidly. m<inf>π</inf> is weakly dependent on μ, decreasing slowly with μ and reaching a minimum 6% less than its μ = 0 value at μ = μ<inf>0</inf>. In a two-flavour free-quark gas at μ = μ<inf>c</inf> the baryon number density would be approximately 3 ρ<inf>0</inf>, where ρ<inf>0</inf> = 0.16 fm<sup>-3</sup>; while in such a gas at μ<inf>0</inf> the density is ρ<inf>0</inf>. © 1998 Published by Elsevier Science B.V. All rights reserved.
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Copyright © 1998 Published by Elsevier Science B.V. All rights reserved