Dirac Spectra and Real QCD at Nonzero Chemical Potential
High Energy Physics - Theory
2017-08-23 v1 Condensed Matter
High Energy Physics - Lattice
High Energy Physics - Phenomenology
Abstract
We show that QCD Dirac spectra well below Lambda_{QCD}, both at zero and at nonzero chemical potential, can be obtained from a chiral Lagrangian. At nonzero chemical potential Goldstone bosons with nonzero baryon number condense beyond a critical value. Such superfluid phase transition is likely to occur in any system with a chemical potential with the quantum numbers of the Goldstone bosons. We discuss the phase diagram for one such system, QCD with two colors, and show the existence of a tricritical point in an effective potential approach.
Keywords
Cite
@article{arxiv.hep-th/0208021,
title = {Dirac Spectra and Real QCD at Nonzero Chemical Potential},
author = {D. Toublan and J. J. M. Verbaarschot},
journal= {arXiv preprint arXiv:hep-th/0208021},
year = {2017}
}
Comments
26 pages, 8 Postscript figures, Invited talk at Symposium and Workshop "Continuous Advances in QCD 2002 / Arkadyfest", May 17-23, 2002