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An iterative method to compute the overlap Dirac operator at nonzero chemical potential
Jacques Bloch, Andreas Frommer, Bruno Lang +1
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 an iterative method,…
Numerical Methods for the QCD Overlap Operator IV: Hybrid Monte Carlo
N. Cundy, S. Krieg, G. Arnold +3
The extreme computational costs of calculating the sign of the Wilson matrix within the overlap operator have so far prevented four dimensional dynamical overlap simulations on rea…
Dynamical overlap simulations using HMC
N. Cundy, S. Krieg, A. Frommer +2
We apply the Hybrid Monte Carlo method to the simulation of overlap fermions. We give the fermionic force for the molecular dynamics update. We present early results on a small dyn…
Numerical Methods for the QCD Overlap Operator:III. Nested Iterations
Nigel Cundy, Andreas Frommer, Jasper van den Eshof +3
The numerical and computational aspects of chiral fermions in lattice quantum chromodynamics are extremely demanding. In the overlap framework, the computation of the fermion propa…