20 papers
Observation of String Breaking in QCD
SESAM Collaboration, Gunnar S. Bali, Hartmut Neff +3
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 reso…
String breaking with dynamical Wilson fermions
G. S. Bali, Th. Duessel, Th. Lippert +3
We present results of our ongoing determination of string breaking in full QCD with N_f=2 Wilson fermions. Our investigation of the fission of the static quark-antiquark string int…
A New Approach to eta' on the Lattice
K. Schilling, H. Neff, N. Eicker +2
We perform an eta' mass analysis based on a total of 1130 dynamical gauge field configurations, with 5 different quark mass values on lattices of size 16^3*32 (SESAM) and 24^3*40 (…
A High Precision Study of the QQ(bar) Potential from Wilson Loops in the Regime of String Breaking
B. Bolder, T. Struckmann, G. S. Bali +5
For lattice QCD with two sea quark flavours we compute the static quark antiquark potential V(R) in the regime where string breaking is expected. In order to increase statistics, w…
A Ginzburg-Landau Analysis of the Colour Electric Flux Tube
G. S. Bali, Ch. Schlichter, K. Schilling
In a simulation of SU(2) gauge theory we investigate, after maximal Abelian projection, the dual Maxwell equations for colour field and monopole current distributions around a stat…
Preconditioning of Improved and ``Perfect'' Fermion Actions
W. Bietenholz, N. Eicker, A. Frommer +4
We construct a locally-lexicographic SSOR preconditioner to accelerate the parallel iterative solution of linear systems of equations for two improved discretizations of lattice fe…