2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/96300We evaluate the pion mass in finite volume to two loops within Chiral Perturbation Theory. The results are compared with a recently proposed extension of the asymptotic formula of Luscher. We find that contributions, which were neglected in the latter, are numerically very small at the two-loop level.6 pages, 2 figures, Talk presented at Lattice 2005 (Hadron spectrum and quark masses)High Energy Physics - Latticetext