507 citations · 2.6k across the 38 of their papers we have counts for
38 papers
The QCD rotator in the chiral limit
P. Hasenfratz
The low lying spectrum of QCD in the delta-regime is calculated here in chiral perturbation theory up to NNL order. The spectrum has a simple form in terms of the pion decay consta…
Towards Weyl fermions on the lattice without artefacts
Peter Hasenfratz, Reto von Allmen
In spite of the breakthrough in non-perturbative chiral gauge theories during the last decade, the present formulation has stubborn artefacts. Independently of the fermion represen…
2+1 Flavor QCD simulated in the epsilon-regime in different topological sectors
P. Hasenfratz, D. Hierl, V. Maillart +4
We generated configurations with the parametrized fixed-point Dirac operator D_{FP} on a (1.6 fm)^4 box at a lattice spacing a=0.13 fm. We compare the distributions of the three lo…
First results in QCD with 2+1 light flavors using the fixed-point action
Anna Hasenfratz, Peter Hasenfratz, Dieter Hierl +2
This is a progress report on 2+1 flavor simulation with the FP action on a lattice with spatial size L=1.2fm. Since m_{ud} is quite small in our simulation we are in the delta regi…
Lattice Regularization and Symmetries
Peter Hasenfratz, Ferenc Niedermayer, Reto von Allmen
Finding the relation between the symmetry transformations in the continuum and on the lattice might be a nontrivial task as illustrated by the history of chiral symmetry. Lattice a…
Simulating Full QCD with the Fixed Point Action
Anna Hasenfratz, Peter Hasenfratz, Ferenc Niedermayer
Due to its complex structure the parametrized fixed point action can not be simulated with the available local updating algorithms. We constructed, coded, and tested an updating pr…