Chiral Loop Effects in the Quenched Scalar Isovector Propagator
arXiv:hep-lat/0110187 · doi:10.1016/S0920-5632(01)01680-2
Abstract
The scalar isovector meson propagator is studied in quenched QCD. For the lightest quark masses used, this propagator is dominated by a quenched chiral loop effect associated with the - two-meson intermediate state. Both the time dependence and the pion mass dependence of the effect are well-described by quenched chiral perturbation theory.
3 pages, 3 figures, Lat2001 Proceedings