An application of the UV-filtering preconditioner to the Polynomial   Hybrid Monte Carlo algorithm
  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 $\beta=5.2, c_{\mathrm{sw}}=2.02, M_{\pi}/M_{\rho}\sim 0.8$ and 0.7 on a $16^3\times 48$ 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. 
PACS-CS Collaboration: K-I.Ishikawa, S.Aoki, T. Ishikawa, N.Ishizuka,   K.Kanaya, Y.Kuramashi, M.Okawa, Y.Taniguchi, A.Ukawa...