The pion mass in finite volume to two loops
Abstract
Description
We 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)
6 pages, 2 figures, Talk presented at Lattice 2005 (Hadron spectrum and quark masses)