The QCD Phase Diagram at Non-zero Baryon and Isospin Chemical Potentials

Abstract

In heavy ion collision experiments as well as in neutron stars, both baryon and isospin chemical potentials are different from zero. In particular, the regime of small isospin chemical potential is phenomenologically important. Using a random matrix model, we find that the phase diagram at non-zero temperature and baryon chemical potential is greatly altered by an arbitrarily small isospin chemical potential: There are two first order phase transitions at low temperature, two critical endpoints, and two crossovers at high temperature. As a consequence, in the region of the phase diagram explored by RHIC experiments, there are two crossovers that separate the hadronic phase from the quark-gluon plasma phase at high temperature.

arXiv comment3 pages, 2 figures. Talk presented at Lattice2004(non-zero), Fermilab, June 21 - 26, 2004

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Cited by in corpus (3)

• Influence of the isospin and hypercharge chemical potentials on the location of the CEP in the mu_B-T phase diagram of the SU(3)_L x SU(3)_R chiral quark model
• Effects of a non-zero strangeness-chemical potential in strong interaction models
• On the Phase Diagram of QCD with Small Isospin Chemical Potential