Toroidal dipole resonances in the relativistic random phase approximation

Details Toroidal dipole resonances in the relativistic random phase approximation Toroidal dipole resonances in the relativistic random phase approximation

2001-07-09

arxiv.org/abs/nucl-th/0107024v2

Phys.Rev. C65 (2002) 021301

Physics

Nuclear Physics

Nuclear Theory

10 pages, 3 figures; Phys.Rev.C, in print

Scientific paper

10.1103/PhysRevC.65.021301

The isoscalar toroidal dipole strength distributions in spherical nuclei are calculated in the framework of a fully consistent relativistic random phase approximation. It is suggested that the recently observed "low-lying component of the isoscalar dipole mode" might in fact correspond to the toroidal giant dipole resonance. Although predicted by several theoretical models, the existence of toroidal resonances has not yet been confirmed in experiment. The strong mixing between the toroidal resonance and the dipole compression mode might help to explain the large discrepancy between theory and experiment on the position of isoscalar giant dipole resonances.

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