Applicability of shape parameterizations for giant dipole resonance in warm and rapidly rotating nuclei

Details Applicability of shape parameterizations for giant dipole resonance in warm and rapidly rotating nuclei Applicability of shape parameterizations for giant dipole resonance in warm and rapidly rotating nuclei

2004-10-18

arxiv.org/abs/nucl-th/0410075v1

Europhys.Lett. 70 (2005) 313-319

Physics

Nuclear Physics

Nuclear Theory

10 pages, 2 figures

Scientific paper

We investigate how well the shape parameterizations are applicable for studying the giant dipole resonance (GDR) in nuclei, in the low temperature and/or high spin regime. The shape fluctuations due to thermal effects in the GDR observables are calculated using the actual free energies evaluated at fixed spin and temperature. The results obtained are compared with Landau theory calculations done by parameterizing the free energy. We exemplify that the Landau theory could be inadequate where shell effects are dominating. This discrepancy at low temperatures and high spins are well reflected in GDR observables and hence insists on exact calculations in such cases.

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