45 citations · 118 across the 5 of their papers we have counts for
3 papers · 1 filter
An Improved Single-Plaquette Gauge Action
Debasish Banerjee, Michael Bögli, Kieran Holland +4
We describe and test a nonperturbatively improved single-plaquette lattice action for 4-d SU(2) and SU(3) pure gauge theory, which suppresses large fluctuations of the plaquette, w…
O(N) Models with Topological Lattice Actions
Wolfgang Bietenholz, Michael Bögli, Urs Gerber +4
A variety of lattice discretisations of continuum actions has been considered, usually requiring the correct classical continuum limit. Here we discuss "weird" lattice formulations…
Non-trivial θ-Vacuum Effects in the 2-d O(3) Model
Michael Bögli, Ferenc Niedermayer, Michele Pepe +1
We study θ-vacua in the 2-d lattice O(3) model using the standard action and an optimized constraint action with very small cut-off effects, combined with the geometric topological…