This title appears in the Scientific Report :
2005
Please use the identifier:
http://dx.doi.org/10.1016/j.nuclphysbps.2004.11.305 in citations.
String breaking with dynamical Wilson fermions
String breaking with dynamical Wilson fermions
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 into a static-light meson-antimeson system is based on dynamical configurations of size 24 3 x 40 produced by the TchiL c...
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Personal Name(s): | Bali, G. S. |
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Düssel, T. / Lippert, T. / Neff, H. / Prkacin, Z. / Schilling, K. | |
Contributing Institute: |
Zentralinstitut für Angewandte Mathematik; ZAM |
Published in: |
Nuclear physics |
Imprint: |
Amsterdam
Elsevier
2005
|
Physical Description: |
609 - 611 |
DOI: |
10.1016/j.nuclphysbps.2004.11.305 |
Document Type: |
Journal Article |
Research Program: |
Betrieb und Weiterentwicklung des Höchstleistungsrechners |
Series Title: |
Nuclear Physics B Proceedings Supplements
140 |
Subject (ZB): | |
Publikationsportal JuSER |
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 into a static-light meson-antimeson system is based on dynamical configurations of size 24 3 x 40 produced by the TchiL collaboration. Combining various optimization methods we determine the matrix elements of the two-by-two system with so far unprecedented accuracy. The all-to-all light quark propagators occurring in the transition element are computed from eigenmodes of the Hermitian Wilson-Dirac matrix complemented by stochastic estimates in the orthogonal subspace. We observe a clear signature for level-splitting between ground state and excited potential. Thus, for the first time, string breaking induced by sea quarks is observed in a simulation of 4-dimensional lattice-QCD. |