Bali, Gunnar S, Dussel, Thomas, Lippert, Thomas, Neff, Hartmut, Prkacin, Zdravko, Schilling, Klaus
We numerically investigate the transition of the static quark-antiquark string into a static-light meson-antimeson system. Improving noise reduction techniques, we are able to resolve the signature...
Anatomy of String Breaking in QCD (2005)
Prkacin, Zdravko, Bali, Gunnar S, Dussel, Thomas, Lippert, Thomas, Neff, Hartmut, Schilling, Klaus
We investigate the string breaking mechanism in n_f=2 QCD. We discuss the lattice techniques used and present results on energy levels and mixing angle of the static BBbar|QbarQ two-state system. The...
Density-density correlators using all-to-all propagators (2005)
Alexandrou, Constantia, Dimopoulos, Petros, Koutsou, Giannis, Neff, Hartmut
We present a study of gauge invariant density-density correlators. Density-density correlators probe hadron wave functions and thus can be used to study hadron deformation. Their zero momentum...
A study of the N to Delta transition form factors in full QCD (2005)
Alexandrou, Constantia, Edwards, Robert, Koutsou, Giannis, Leontiou, Theodoros, Neff, Hartmut, Negele, John W., ...
The N to Delta transition form factors GM1, GE2 and GC2 are evaluated using dynamical MILC configurations and valence domain wall fermions at three values of quark mass corresponding to pion mass 606...
Observation of String Breaking in QCD (2005)
Neff, Hartmut, Duessel, Thomas, Lippert, Thomas, Schilling, Klaus
We numerically investigate the transition of the static quark-antiquark string into a static-light meson-antimeson system. Improving noise reduction techniques, we are able to resolve the signature...
Mobius Fermions: Improved Domain Wall Chiral Fermions (2004)
Brower, Richard C., Neff, Hartmut, Orginos, Kostas
A new class of domain wall fermions is defined that interpolates between Shamir's and Bori\c{c}i's form without increasing the number of Dirac applications per CG iteration. This class represents a...
Fast Parallel I/O on Cluster Computers (2003)
Duessel, Thomas, Eicker, Norbert, Isaila, Florin, Lippert, Thomas, Moschny, Thomas, Neff, Hartmut, ...
Today's cluster computers suffer from slow I/O, which slows down I/O-intensive applications. We show that fast disk I/O can be achieved by operating a parallel file system over fast networks such as...
Quark mass effects on the topological susceptibility in QCD (2001)
Bali, Gunnar S., Eicker, Norbert, Lippert, Thomas, Neff, Hartmut, Orth, Boris, Schilling, Klaus, ...
We investigate topology in lattice simulations of QCD with two flavours of dynamical Wilson fermions. At various sea quark masses we find reasonable agreement between results for the topological...
Low fermionic eigenmode dominance in QCD on the lattice [Elektronische Ressource] / (2001)
Zugl.: Wuppertal, University, Diss., 2001.