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Durham University

Department of Mathematical Sciences


Publication details for Professor Emeritus Wojtek Zakrzewski

Kopeliovich, V.B., Piette, B. & Zakrzewski, W.J. (2006). Mass Terms in the Skyrme Model. Quark 2006, St' Petersbourg, Russia.

Author(s) from Durham


We consider various forms of the mass term for the Skyrme model and their implications
on the properties of baryonic states. We show that modifications of the mass term, without
changing the asymptotic behaviour of the profile function at large r, can considerably alter
the mass term contributions.
We argue that if one considers the Skyrme model as an effective model for nuclei, then
the new mass terms should be taken to obtain a better description of the existing nuclei.
In particular, we find that for some choices of the mass term, the formation of a shell like
structure for large baryon number is energetically unfavourable for low baryon numbers and
for the physical values of the pion mass.