An application of the UV-filtering preconditioner to the Polynomial Hybrid Monte Carlo algorithm
Ken-Ichi Ishikawa · Proceedings of XXIVth International Symposium on Lattice Field Theory — PoS(LAT2006) · 2006
We apply the UV-filtering preconditioner, previously used to improve the Multi-Boson algorithm, to the Polynomial Hybrid Monte Carlo (UV-PHMC) algorithm.The performance test for the algorithm is given for the plaquette gauge action and the O(a)-improved Wilson action at β = 5.2, c sw = 2.02, M π /M ρ ∼ 0.8 and 0.7 on a 16 3 × 48 lattice.We find that the UV-filtering reduces the magnitude of the molecular dynamics force from the pseudo fermion by a factor 3 by tuning the UV-filter parameter.Combining with the multi-time scale molecular dynamics integrator we achieve a factor 2 improvement.