Speaker
Patrick Fritzsch
(CERN)
Description
Rough gauge fields are an obstacle in large-scale dynamical fermion simulations with Wilson quarks when the pion mass is lowered and the gap of the lattice Dirac operator shrinks. In this talk, a reformulation of the O(a) improved Wilson-Dirac operator is given which is largely protected from numerical instabilities during the molecular dynamics evolution. First results are very promising as physical-point simulations in three-flavour QCD at lattice spacings as large as 0.095 fm become feasible. The implementation comes without additional cost and is a crucial ingredient towards master-field simulations with fermions.
Authors
Patrick Fritzsch
(CERN)
Anthony Sebastian Francis
(CERN)
Martin Lüscher
(CERN)
Antonio Rago
(University of Plymouth (GB))
