Zürich Gradient Flow Workshop 2025

Session

Session 8

13 Feb 2025, 15:30

Y36-K08 (University of Zürich)

23. Classically perfect gradient flows

Urs Wenger

13/02/2025, 15:30

Contribution

Classically perfect fixed-point lattice actions preserve continuum classical properties while reducing lattice artifacts at the quantum level. They allow the extraction of continuum physics from coarser lattices and hence provide an effective way to overcome the challenges of critical slowing down and topological freezing as the continuum limit is approached. In this talk we show that...

29. Stout smearing and Wilson flow in lattice perturbation theory (and beyond)

Stephan Durr (University of Wuppertal)

13/02/2025, 16:00

Invited talk

I present a sketch of the paper arXiv:2406.03493 (published in PRD) by Max Ammer and myself. It gives the expansion of stout smearing and the Wilson flow in lattice perturbation theory to order g_0^3, which is suitable for one-loop calculations. As the Wilson flow is generated by infinitesimal stout smearing steps, the results are related to each other by taking the appropriate limits. This...

42. Discussion

13/02/2025, 16:30

47. Dinner Information

13/02/2025, 17:00