Microscopic correlation functions for the QCD Dirac operator with chemical potential

Details Microscopic correlation functions for the QCD Dirac operator with chemical potential Microscopic correlation functions for the QCD Dirac operator with chemical potential

2002-04-08

arxiv.org/abs/hep-th/0204068v2

Phys.Rev.Lett. 89 (2002) 072002

Physics

High Energy Physics

High Energy Physics - Theory

LaTeX, 4 pages, 2 figs., typos corrected and refs. added

Scientific paper

10.1103/PhysRevLett.89.072002

A chiral random matrix model with complex eigenvalues is solved as an effective model for QCD with non-vanishing chemical potential. We derive new matrix model correlation functions which predict the local fluctuations of complex Dirac operator eigenvalues at zero virtuality. The parameter which measures the non-Hermiticity of the Dirac matrix is identified with the chemical potential. In the phase with broken chiral symmetry all spectral correlations of the Dirac eigenvalues are calculated as functions of quark flavors and chemical potential. The derivation uses the orthogonality of the Laguerre polynomials in the complex plane. Explicit results are given for any finite matrix size N as well in the large-N limit for weak and strong non-Hermiticity.

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