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arXiv · hep-ph/9303221

The Breathing Mode in Extended Skyrme Model

Abdellatif Abada·Houari Merabet
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Abstract

We study an extended Skyrme model which includes fourth and sixth-order terms. We explore some static properties like the $Δ$-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.

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Abdellatif Abada, Houari Merabet. 1993-03-04. The Breathing Mode in Extended Skyrme Model. https://doi.org/10.1103/physrevd.48.2337

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