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Berlin 2005 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 27: Theorie

HK 27.8: Talk

Tuesday, March 8, 2005, 15:45–16:00, TU MA005

Dirac operator for two color QCD at nonzero chemical potential vs matrix models — •Harald Markum1, Gernot Akemann2, Elmar Bittner3, Maria-Paola Lombardo4, and Rainer Pullirsch11Atominstitut, Technische Universität Wien, Austria — 2Department of Mathematical Sciences, Brunel University West London, UK — 3Institut für Theoretische Physik, Universität Leipzig, Germany — 4INFN - Laboratori Nazionali di Frascati, Italy

We investigate the eigenvalue spectrum of the staggered Dirac matrix in two color QCD at finite chemical potential. The profiles of complex eigenvalues close to the origin are compared to a complex generalization of the chiral Gaussian Symplectic Ensemble, confirming its predictions for weak and strong non-Hermiticity. They differ from the QCD symmetry class with three colors by a level repulsion from both the real and imaginary axis.

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