Simulating the Schroedinger functional with two pseudo-fermions: algorithmic study and the running mass

Abstract

We present an algorithmic study for the simulation of two massless flavors of O(a) improved Wilson quarks with Schroedinger functional boundary conditions. The algorithm used is Hybrid Monte Carlo with two pseudo-fermion fields as proposed by M. Hasenbusch. A gain in CPU cost of a factor two is reached when compared to one pseudo-fermion field due to the larger possible step-size. This study is integrated in the ALPHA project for the computation of the running of the renormalized quark mass. We include an update on these physics results.

3 pages, 3 figures, Lattice2003(machine)

References in corpus (4)

• Speeding up the Hybrid-Monte-Carlo algorithm for dynamical fermions
• Speeding up Lattice QCD simulations with clover-improved Wilson Fermions
• First results on the running coupling in QCD with two massless flavours
• Accelerating the Hybrid Monte Carlo algorithm

Cited by in corpus (4)

• Non-perturbative quark mass renormalization in two-flavor QCD
• Non-perturbative renormalization of static-light four-fermion operators in quenched lattice QCD
• Non-perturbative renormalization of left-left four-fermion operators in quenched lattice QCD
• The continuum limit of the quark mass step scaling function in quenched lattice QCD