Pion-mass dispersion relation in the baryon sector
arXiv:1303.7263
Abstract
By looking at the complex plane of the pion-mass squared we establish a dispersion relation which the static quantities, such as baryon masses, magnetic moments, polarizabilities, should obey. This dispersion relation yields insight into the differences between the heavy-baryon and relativistic calculations in the baryon sector of chiral perturbation theory.
6 pages, 3 figs, contribution to 7th International Workshop on Chiral Dynamics (CD12)