51 citations · 70 across the 6 of their papers we have counts for
6 papers
In Memoriam: Peter Higgs (1929-2024)
Wolfgang Bietenholz, José Antonio García-Hernández
Peter Higgs was a British theoretical physicist, famous for his work published in 1964, where he proposed a mechanism that can generate masses for elementary particles, while respe…
Berezinskii-Kosterlitz-Thouless Transition with a Constraint Lattice Action
Wolfgang Bietenholz, Urs Gerber, Fernando G. Rejón-Barrera
The 2d XY model exhibits an essential phase transition, which was predicted long ago --- by Berezinskii, Kosterlitz and Thouless (BKT) --- to be driven by the (un)binding of vortex…
Simulations of a supersymmetry inspired model on a fuzzy sphere
Wolfgang Bietenholz
We present a numerical study of a two dimensional model of the Wess-Zumino type. We formulate this model on a sphere, where the fields are expanded in spherical harmonics. The sphe…
The operator product expansion on the lattice
W. Bietenholz, N. Cundy, M. Göckeler +8
We investigate the Operator Product Expansion (OPE) on the lattice by directly measuring the product <Jmu Jnu> (where J is the vector current) and comparing it with the expectation…
Axial Correlation Functions in the epsilon-Regime: a Numerical Study with Overlap Fermions
W. Bietenholz, T. Chiarappa, K. Jansen +2
We present simulation results employing overlap fermions for the axial correlation functions in the epsilon-regime of chiral perturbation theory. In this regime, finite size effect…
Extracting physics from an unphysical situation: light mesons in a small box
W. Bietenholz, S. Capitani, T. Chiarappa +9
Quantum Chromo Dynamics is considered in a setup where the light mesons are squeezed into unphysically small boxes. We show how such a situation can be used to determine the coupli…