5 papers
Topological Susceptibility of the 2d O(3) Model under Gradient Flow
Wolfgang Bietenholz, Philippe de Forcrand, Urs Gerber +2
The 2d O(3) model is widely used as a toy model for ferromagnetism and for Quantum Chromodynamics. With the latter it shares --- among other basic aspects --- the property that the…
Topological Susceptibility under Gradient Flow
Héctor Mejía-Díaz, Wolfgang Bietenholz, Krzysztof Cichy +4
We study the impact of the Gradient Flow on the topology in various models of lattice field theory. The topological susceptibility is measured directly, and by the slab…
Wave functions for three electrons in a magnetic field
H. Mejía-Díaz, D. J. Nader, J. Alvarez-Jiménez
This manuscript is in progress and the first version was removed by decision of the autors.
Interpreting Numerical Measurements in Fixed Topological Sectors
Wolfgang Bietenholz, Christopher Czaban, Arthur Dromard +4
For quantum field theories with topological sectors, Monte Carlo simulations on fine lattices tend to be obstructed by an extremely long auto-correlation time with respect to the t…
Simulations at fixed topology: fixed topology versus ordinary finite volume corrections
Arthur Dromard, Wolfgang Bietenholz, Urs Gerber +2
Lattice QCD simulations tend to get stuck in a single topological sector at fine lattice spacing, or when using chirally symmetric quarks. In such cases computed observables differ…