Two Loop Partially Quenched and Finite Volume Chiral Perturbation Theory Results

Details Two Loop Partially Quenched and Finite Volume Chiral Perturbation Theory Results Two Loop Partially Quenched and Finite Volume Chiral Perturbation Theory Results

2005-09-14

arxiv.org/abs/hep-lat/0509042v1

PoS LAT2005 (2005) 058

Physics

High Energy Physics

High Energy Physics - Lattice

6 pages, talk presented at XXIIIrd International Symposium on Lattice Field Theory, 25-30 July 2005, Trinity College, Dublin,

Scientific paper

This talk presents some results relevant for lattice QCD at higher order in ChPT. First we discuss the finite volume corrections at two loops for the quark condensate as well as a L\"uscherlike finite volume formula for it. The latter allows for an alternative determination of meson sigma terms. The second set of results presented here are the calculations at two loops in partially quenched chiral perturbation theory of masses and decay constants of the charged mesons. We present results for all relevant quark mass combinations for the cases with two and three sea quarks.

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