Jair Wuilloud (Muenster):

One flavour QCD

Abstract:

For QCD with N_f=1 flavour, lattice numerical studies of the phase structure should allow for the investigation of questions like the definition of the quark mass and a possible symmetry breaking of CP.  Around interesting points in the phase diagram, situations arise where the determinant of the Dirac-Wilson operator becomes negative and its sign has to be computed.  We discuss techniques for evaluating the spectrum of the Dirac-Wilson operator and the sign of its determinant.

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