Shell correction energy for bubble nuclei

Details Shell correction energy for bubble nuclei Shell correction energy for bubble nuclei

1999-02-05

arxiv.org/abs/nucl-th/9902011v4

Phys.Rev.Lett. 84 (2000) 412-415

Physics

Nuclear Physics

Nuclear Theory

4 pages, 3 figures. To appear in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.84.412

The positioning of a bubble inside a many fermion system does not affect the volume, surface or curvature terms in the liquid drop expansion of the total energy. Besides possible Coulomb effects, the only other contribution to the ground state energy of such a system arises from shell effects. We show that the potential energy surface is a rather shallow function of the displacement of the bubble from the center and in most cases the preferential position of a bubble is off center. Systems with bubbles are expected to have bands of extremely low lying collective states, corresponding to various bubble displacements.

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