Speaker
D Nogradi
Description
Luscher's recently introduced Yang-Mills gradient flow is adapted to a finite volume setting. A suitable renormalized coupling is then defined which only depends on the linear size of the finite 4-volume. Using step scaling the beta-function of non-abelian gauge theories can easily be measured on the lattice in this new scheme. The ideas are illustrated for SU(3) coupled to N_f = 4 flavors including a careful and fully controlled continuum limit and preliminary results for N_f = 8 flavors.
