The pion mass in finite volume to two loops
نویسنده
چکیده
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 Lüscher. We find that contributions, which were neglected in the latter, are numerically very small at the two-loop level. The pion mass in finite volume to two loops Christoph Haefeli
منابع مشابه
Finite volume effects for the pion mass at two loops
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 Lüscher. We find that contributions, which were neglected in the latter, are numerically very small at the two–loop level and conclude that for MπL & 2, L ≥ 2fm the finite volume effects in the meson sector are analyt...
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