ar X iv : h ep - l at / 0 51 10 31 v 1 1 6 N ov 2 00 5 Möbius

ar X iv : h ep - l at / 0 51 10 31 v 2 1 7 N ov 2 00 5 Möbius

We introduce a new domain wall operator that represents a full (real) Möbius transformation of a given non-chiral Dirac kernel. Shamir's and Chiu/Boriçi's domain wall fermions are special cases of this new class. By tuning the parameters of the Möbius operator and by introducing a new Red/Black preconditioning, we are able to reduce the computational effort substantially.

ar X iv : h ep - l at / 0 51 10 31 v 3 2 4 N ov 2 00 5 Möbius Fermions

We introduce a new domain wall operator that represents a full (real) Möbius transformation of a given non-chiral Dirac kernel. Shamir's and Chiu/Boriçi's domain wall fermions are special cases of this new class. By tuning the parameters of the Möbius operator and by introducing a new Red/Black preconditioning, we are able to reduce the computational effort substantially.

ar X iv : h ep - l at / 0 11 00 06 v 3 6 N ov 2 00 1 1 Matrix elements of ∆ S = 2 operators with Wilson fermions

ar X iv : h ep - l at / 0 51 10 32 v 1 1 6 N ov 2 00 5 Nonperturbative investigation of the diquark potential

We perform an investigation of the static quark-quark-potential both in the confined and the de-confined phase. We discuss conceptual and technical problems and present first results of an exploratory numerical investigation. c Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.

ar X iv : h ep - l at / 0 51 10 47 v 1 2 2 N ov 2 00 5 Current status of Dynamical Overlap project

We discuss the adaptation of the Hybrid Monte Carlo algorithm to overlap fermions. We derive a method which can be used to account for the delta function in the fermionic force caused by the differential of the sign function. We discuss the algoritmic difficulties that have been overcome, and mention those that still need to be solved.