Speaker
Andreas Risch
(Zeuthen Particle PhysicsTheory)
Description
When designing lattice actions, gauge field smearing is frequently used to define the lattice Dirac operator. One wants to avoid the situation when too much smearing leads to uncontrolled continuum extrapolations as the short distance behaviour of the lattice theory is modified. We focus on the gradient flow formalism as it allows to study both smearing and physical flow. We investigate the effect of smearing on the scaling towards the continuum limit in pure gauge theory on the example of Creutz ratios, which provide a measure of the physical forces felt by the fermions. For suitable smearing strengths we also investigate the change when the Wilson gradient flow is replaced by stout smearing.
Primary author
Andreas Risch
(Zeuthen Particle PhysicsTheory)
