Journal
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS
Volume 153, Issue -, Pages 41-48Publisher
ELSEVIER
DOI: 10.1016/j.nuclphysbps.2006.01.004
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We calculate the finite volume effects for the pion and nucleon mass. For the pion mass we present the results of a full two-loop calculation in chiral perturbation theory. The outcome shows that the resummed version of the Luscher formula we presented in an earlier work does indeed give an excellent approximation to the two-loop result. In view of this result we apply the same resummed formula to the nucleon mass. In the nucleon sector the extension of the chiral expansion to higher quark masses appears to be more problematic and it is therefore more difficult to make reliable predictions for the size of the finite volume effects. We present some preliminary numerical estimates.
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