Relativity, chiral symmetry, and the nucleon electromagnetic form factors

Abstract

A relativistic interpretation for why the proton's $G_E/G_M$ falls and $Q{F}_2/F_1$ is approximately constant is presented. Reproducing the observed $G_E^n$ mandates the inclusion of the effects of the pion cloud. The full relativistic model with a pion cloud provides a good reproduction of all of the nucleon electromagnetic form factors.

Comments: Text of talk presented at the conference Nuclear Dynamics: From Quarks to Nuclei