Improvement of algorithms for dynamical overlap fermions

Abstract

We investigate the algorithms for dynamical overlap fermions aiming at improving the performance for large-scale simulations. We look for the best combination of Hybrid Monte Carlo options and iterative quark solvers with respect to the numerical costs. Our main target is a $N_f=2$ simulation with overlap fermion on a $16^3\times 32$ lattice at lattice spacing around 0.12 fm.

7 pages, 8 figures, talk given at Lattice 2006 (Algorithms, Machines, and Networks), to appear in Proceedings Of Science, POS(LAT2006)031

References in corpus (7)

• Numerical Methods for the QCD Overlap Operator: I. Sign-Function and Error Bounds
• Dynamical overlap fermions, results with hybrid Monte-Carlo algorithm
• Lattice gauge action suppressing near-zero modes of H_W
• Speeding up the Hybrid-Monte-Carlo algorithm for dynamical fermions
• Numerical Methods for the QCD Overlap Operator:III. Nested Iterations
• Domain wall fermions in vector theories
• Lattice QCD with fixed topology

Cited by in corpus (4)

• Monte-Carlo simulations of overlap Majorana fermions
• Exploring the chiral regime with dynamical overlap fermions
• Light dynamical fermions on the lattice: toward the chiral regime of QCD
• Theta vacuum physics from QCD at fixed topology