Article (Scientific journals)
Random matrix study of the phase structure of QCD with two colors
Vanderheyden, Benoît; Jackson, A. D.
2001In Physical Review. D, Particles and Fields, 64 (7), p. 074016
Peer reviewed
 

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Abstract :
[en] We apply a random matrix model to the study of the phase diagram of QCD with two colors, two flavors, and a small quark mass. Although the effects of temperature are only included schematically, this model reproduces most of the ground state predictions of chiral perturbation theory and also gives a qualitative picture of the phase diagram at all temperatures. It leads, however, to an unphysical behavior of the chiral order parameter and the baryon density in vacuum and does not support diquark condensation at arbitrarily high densities. A better treatment of temperature dependence leads to correct vacuum and small temperature properties. We compare our results at both high and low densities with the results of microscopic calculations using the Nambu-Jona-Lasinio (NJL) model and discuss the effects of large momentum scales on the variations of condensation fields with chemical potential.
Disciplines :
Physics
Author, co-author :
Vanderheyden, Benoît  ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Electronique et microsystèmes
Jackson, A. D.;  The Niels Bohr Institute, Copenhague, Danemark
Language :
English
Title :
Random matrix study of the phase structure of QCD with two colors
Publication date :
2001
Journal title :
Physical Review. D, Particles and Fields
ISSN :
0556-2821
eISSN :
1089-4918
Publisher :
American Physical Society, College Park, United States - Maryland
Volume :
64
Issue :
7
Pages :
074016
Peer reviewed :
Peer reviewed
Available on ORBi :
since 08 January 2009

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