Author/Authors :
QCDSF Collaboration، نويسنده , , A Ali Khan، نويسنده , , T. Bakeyev، نويسنده , , M G?ckeler، نويسنده , , R Horsley، نويسنده , , D Pleiter، نويسنده , , P Rakow، نويسنده , , A Sch?fer، نويسنده , , G Schierholz، نويسنده , , H Stüben، نويسنده ,
Abstract :
An algorithm for separating the high- and low-frequency molecular dynamics modes in hybrid Monte Carlo (HMC) simulations of gauge theories with dynamical fermions is presented. The separation is based on splitting the pseudo-fermion action into two parts, as was initially proposed by Hasenbusch. We propose to introduce different evolution time-scales for each part. We test our proposal in realistic simulations of two-flavor O(a) improved Wilson fermions. A speed-up of more than a factor of three compared to the standard HMC algorithm is observed in a typical run.
