Pionic fluctuations of constituent quarks and the neutron charge radius

Pion loop fluctuations of the constituent u and d quarks are shown to give only a minute contribution to the intrinsic charge radius of the neutron, u nder the assumption that the pion-quark coupling constant has its conventio nal value, with a cut-off scale of the order of 1.0 GeV. The contribution f rom the pion loops to the anomalous magnetic moment of the neutron represen ts a small (similar to 12-14%) increase over of the static quark model valu e. (C) 1999 Published by Elsevier Science B.V. All rights reserved.