Bali, G.S., Dussel, T., Lippert, T., Neff, H., Prkacin, Z. and Schilling, K. (2005) String breaking with dynamical Wilson fermions. Nuclear Physics, Section B, Proceedings Supplements, 140, pp. 609-611. (doi: 10.1016/j.nuclphysbps.2004.11.305)
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Abstract
We present results of our ongoing determination of string breaking in full QCD with Nf = 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 243 × 40 produced by the TχL 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.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | UNSPECIFIED |
| Authors: | Bali, G.S., Dussel, T., Lippert, T., Neff, H., Prkacin, Z., and Schilling, K. |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Nuclear Physics, Section B, Proceedings Supplements |
| Publisher: | Elsevier BV |
| ISSN: | 0920-5632 |
| ISSN (Online): | 1873-3832 |
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