28 citations · 61 across the 13 of their papers we have counts for
5 papers · 1 filter
Testing a Topology Conserving Gauge Action in QCD
S. Shcheredin, W. Bietenholz, K. Jansen +3
We study lattice QCD with a gauge action, which suppresses small plaquette values. Thus the MC history is confined to a single topological sector over a significant time, while oth…
Comparison between overlap and twisted mass fermions towards the chiral limit
W. Bietenholz, S. Capitani, T. Chiarappa +10
We compare overlap fermions, which are chirally invariant, and Wilson twisted mass fermions in the approach to the chiral limit. Our quenched simulations reveal that with both form…
First Simulation Results for the Photon in a Non-Commutative Space
W. Bietenholz, F. Hofheinz, J. Nishimura +2
We present preliminary simulation results for QED in a non-commutative 4d space-time, which is discretized to a fuzzy lattice. Its numerical treatment becomes feasible after its ma…
On the relation between non-commutative field theories at theta = infinity and large N matrix field theories
Wolfgang Bietenholz, Frank Hofheinz, Jun Nishimura
It is well-known that non-commutative (NC) field theories at theta = infinity are ``equivalent'' to large N matrix field theories to all orders in perturbation theory, due to the d…
Phase diagram and dispersion relation of the non-commutative λϕ^{4} model in d=3
W. Bietenholz, F. Hofheinz, J. Nishimura
We present a non-perturbative study of the λϕ^{4} model in a three dimensional Euclidean space, where the two spatial coordinates are non-commutative. Our results are obtained from…