Virtual Compton Scattering off the nucleon in the linear sigma model

Abstract

Virtual Compton scattering off the nucleon has been studied in the one-loop approximation of the linear sigma model. The three generalized polarizabilities of the nucleon have been calculated and compared with the existing theoretical predictions. In particular, we find that only two of the three scalar polarizabilities are independent observables.

Comments: 6 pages, Latex, 1 Postscript figure, uses sprocl.sty (included), talk given at the 'Workshop on Virtual Compton Scattering' (Clermont-Ferrand, June 1996), to appear in the conference proceedings