329 citations · 3.6k across the 77 of their papers we have counts for
5 papers · 1 filter
Algorithms for lattice QCD: progress and challenges
Stefan Schaefer
The development of improved algorithms for QCD on the lattice has enabled us to do calculations at small quark masses and get control over the chiral extrapolation. Also finer latt…
Autocorrelations in Hybrid Monte Carlo Simulations
Stefan Schaefer, Francesco Virotta
Simulations of QCD suffer from severe critical slowing down towards the continuum limit. This problem is known to be prominent in the topological charge, however, all observables a…
Comparison of the mass preconditioned HMC and the DD-HMC algorithm for two-flavour QCD
Marina Marinkovic, Stefan Schaefer
Mass preconditioned HMC and DD-HMC are among the most popular algorithms to simulate Wilson fermions. We present a comparison of the performance of the two algorithms for realistic…
Critical slowing down and error analysis in lattice QCD simulations
Stefan Schaefer, Rainer Sommer, Francesco Virotta
We study the critical slowing down towards the continuum limit of lattice QCD simulations with Hybrid Monte Carlo type algorithms. In particular for the squared topological charge…
Speeding up parallel tempering simulations
Martin Hasenbusch, Stefan Schaefer
We discuss methods that allow to increase the step-size in a parallel tempering simulation of statistical models and test them at the example of the three-dimensional Heisenberg sp…