Zürich Gradient Flow Workshop 2025

Session

Session 11

14 Feb 2025, 13:30

Y36-K08 (University of Zürich)

21. Gradient-flow renormalon subtraction and the hadronic tau decay series

M Beneke

14/02/2025, 13:30

Invited talk

The inconsistency between the fixed-order (FO) and contour-improved (CI) representation of the QCD corrections to the inclusive hadronic tau decay width limits the precision to which the strong coupling can be determined from this process. It has been shown that subtracting the infrared renormalon divergence related to the gluon condensate resolves the discrepancy. We employ the gradient flow...

31. Heavy Quark(onium) transport with GF on the lattice

Viljami Leino (Helmholtz Institute Mainz)

14/02/2025, 14:00

Invited talk

The dynamics of heavy particles in a strongly coupled plasma is determined by transport coefficients. Especially for heavy quarkonia, the real-time evolution is described by transport coefficients $\kappa$ and $\gamma$.
On the lattice, these transport coefficients can be measured from correlators of chromoelectric fields connected by a Wilson line. Gradient flow is a beneficial tool to...

33. The Static force with gradient flow from the lattice

Julian Mayer-Steudte (Technical University of Munich)

14/02/2025, 14:30

Invited talk

We measured the static force directly in the continuum limit on the lattice in quenched theory for the first time. A generalized Wilson loop with a chromoelectric field insertion in one of the temporal Wilson lines is the operator that measures the static force directly. However, chromoelectric field insertions converge slowly to the continuum and require an improvement. We use gradient flow...