Excitation of non-quark degrees of freedom in N*

Abstract

We study the contribution of glueball and sigma-meson degrees of freedom to nucleon excited states in the framework of a chiral version of the chromodielectric model. We have found that these degrees of freedom considerably lower the energy of the Roper and may substantially weaken the electroexcitation amplitudes for the N(1440) and in particular for the N(1710).

4 pages, 2 Postscript figures, plain LaTeX, talk presented at the Mini-Workshop on ``Few body problems in hadronic and atomic physics'', Bled, Slovenia, 7-14 July 2001