ar X iv : h ep - l at / 9 71 00 19 v 1 3 O ct 1 99 7 Topological sectors and the pion mass
نویسندگان
چکیده
We study quenched and dynamical pion correlators in the two-flavour Schwinger model (2D QED) both within topological charge sectors and averaged. The results show that a clean-cut definition of a pion mass is no longer possible if tunneling between sectors does not occur.
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