Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2003-10-20
Physics
High Energy Physics
High Energy Physics - Lattice
6 pages; contribution to the 2003 Workshop on Lattice Hadron Physics, Cairns, Australia
Scientific paper
10.1016/S0920-5632(03)02460-5
In this talk, I reported on recent work on the Aoki phase diagram for quenched QCD with two flavors of Wilson fermions. Part of this work was done in collaboration with Yigal Shamir, and a shorter account of this part appeared recently. In this write-up, I will therefore limit myself to reporting on work done with Steve Sharpe and Robert Singleton, Jr, which has not been published yet. We discuss the symmetries of quenched QCD, paying careful attention to non-perturbative issues. This allows us to derive an effective lagrangian which agrees with standard quenched chiral perturbation theory, but which can also be used to address questions of a non-perturbative nature.
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