%0 Journal Article
%T The Breathing Mode in Extended Skyrme Model
%A Abdellatif Abada
%A Houari Merabet
%J Physics
%D 1993
%I arXiv
%R 10.1103/PhysRevD.48.2337
%X We study an extended Skyrme model which includes fourth and sixth-order terms. We explore some static properties like the $\Delta$-nucleon mass splitting and investigate the Skyrmion breathing mode in the framework of the linear response theory. We find that the monopole response function has a pronounced peak located at $\sim$ 400 MeV, which we identify to the Roper resonance $N(1440)$. As compared to the standard one, the extended Skyrme model provides a more accurate description of baryon properties.
%U http://arxiv.org/abs/hep-ph/9303221v1