88 citations · 163 across the 4 of their papers we have counts for
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Low energy chiral constants from epsilon-regime simulations with improved Wilson fermions
Anna Hasenfratz, Roland Hoffmann, Stefan Schaefer
We present a lattice QCD calculation of the low energy constants of the leading order chiral Lagrangian. In these simulations the epsilon regime is reached by using tree-level impr…
Reweighting towards the chiral limit
Anna Hasenfratz, Roland Hoffmann, Stefan Schaefer
We propose to perform fully dynamical simulations at small quark masses by reweighting in the quark mass. This approach avoids some of the technical difficulties associated with di…
Non-perturbative improvement of nHYP smeared Wilson fermions
Roland Hoffmann, Anna Hasenfratz, Stefan Schaefer
Using Schroedinger functional techniques, we determine the coefficient of the clover term necessary for non-perturbative O(a) improvement of hypercubic smeared Wilson fermions on a…
Localized eigenmodes of the overlap operator and their impact on the eigenvalue distribution
Anna Hasenfratz, Roland Hoffmann, Stefan Schaefer
In a system where chiral symmetry is spontaneously broken, the low energy eigenmodes of the continuum Dirac operator are extended. On the lattice, due to discretization effects, th…
The Static Potential with Hypercubic Blocking
A. Hasenfratz, R. Hoffmann, F. Knechtli
We measure the static potential from Wilson loops constructed using hypercubic blocked (HYP) links. The HYP potential agrees with the potential measured using thin links for distan…
Simulating dynamical fermions with smeared links
A. Hasenfratz, F. Knechtli
Smearing the gauge links of dynamical configurations removes small scale unphysical vacuum fluctuations and thus improves the chiral properties of lattice fermions. Recently we pro…