Finite size effects on Mπ in QCD from Chiral Perturbation Theory
G. Colangelo, S. Dürr, R. Sommer
Abstract
We present a determination of the shift Mπ(L)-Mπ due to the finite spatial box size L by means of Nf=2 Chiral Perturbation Theory and Lüscher's formula. The range of applicability of the chiral prediction is discussed.
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