58 citations · 316 across the 20 of their papers we have counts for
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Random matrix analysis of the QCD sign problem for general topology
Jacques Bloch, Tilo Wettig
Motivated by the important role played by the phase of the fermion determinant in the investigation of the sign problem in lattice QCD at nonzero baryon density, we derive an analy…
Comparing iterative methods to compute the overlap Dirac operator at nonzero chemical potential
Jacques Bloch, Tobias Breu, Tilo Wettig
The overlap Dirac operator at nonzero quark chemical potential involves the computation of the sign function of a non-Hermitian matrix. In this talk we present iterative Krylov sub…
Polyakov loops and spectral properties of the staggered Dirac operator
Falk Bruckmann, Stefan Keppeler, Marco Panero +1
We study the spectrum of the staggered Dirac operator in SU(2) gauge fields close to the free limit, for both the fundamental and the adjoint representation. Numerically we find a…
Character expansion method for supergroups and extended superversions of the Leutwyler-Smilga and Berezin-Karpelevich integrals
C. Lehner, T. Wettig, T. Guhr +1
We introduce an extension of the character expansion method to the case of supergroups. This method allows us to calculate a superversion of the Leutwyler-Smilga integral which, to…