An application of the UV-filtering preconditioner to the Polynomial Hybrid Monte Carlo algorithm

Details An application of the UV-filtering preconditioner to the Polynomial Hybrid Monte Carlo algorithm An application of the UV-filtering preconditioner to the Polynomial Hybrid Monte Carlo algorithm

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006slft.confe..27i&link_type=abstract

Proceedings of the XXIVth International Symposium on Lattice Field Theory. July 23-28, 2006, Tucson, Arizona., p.27.1

Computer Science

Performance

Scientific paper

, 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, csw = 2.02, Mπ /Mρ ˜ 0.8 and 0.7 on a 163 × 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.

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