180 citations · 2.3k across the 144 of their papers we have counts for
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Perfect Scalars on the Lattice
W. Bietenholz
We perform renormalization group transformations to construct optimally local perfect lattice actions for free scalar fields of any mass. Their couplings decay exponentially. The s…
Improved Overlap Fermions
W. Bietenholz, I. Hip
We test exact and approximate Ginsparg-Wilson fermions with respect to their chiral and scaling behavior in the 2-flavor Schwinger model. We first consider explicit approximate GW…
The Scaling of Exact and Approximate Ginsparg-Wilson Fermions
W. Bietenholz, I. Hip
We construct a number of lattice fermions, which fulfill the Ginsparg-Wilson relation either exactly or approximately, and test them in the framework of the 2-flavor Schwinger mode…
The Absence of Ultralocal Ginsparg-Wilson Fermions
W. Bietenholz
It was shown recently by I. Horvath that lattice fermions obeying the standard form of the Ginsparg-Wilson relation cannot be ultralocal. However, there are more general forms of t…