Topology and pion correlators -- a study in the N_f=2 Schwinger model

Details Topology and pion correlators -- a study in the N_f=2 Schwinger model Topology and pion correlators -- a study in the N_f=2 Schwinger model

2001-10-22

arxiv.org/abs/hep-lat/0110190v1

Nucl.Phys.Proc.Suppl. 106 (2002) 598-600

Physics

High Energy Physics

High Energy Physics - Lattice

Lattice2001(confinement), 3 pages, 2 figures

Scientific paper

10.1016/S0920-5632(01)01789-3

I readdress the issue whether the topological charge of the gauge background has an influence on a hadronic observable. To this end pion correlators in the Schwinger model with 2 dynamical flavours are determined on subensembles with a fixed topological charge. It turns out that the answer depends on a specific function of the sea-quark mass and the box volume which is in close analogy to the Leutwyler-Smilga parameter in full QCD.

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