2004/10/18 by P. Arumugam, P Arumugam, A. Ganga Deb +2 · 1 citation
Chemistry · Physics and Astronomy · #Advanced NMR Techniques and Applications #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #nucl-th
paper · pdf · doi:10.1209/epl/i2005-10012-8
published as Europhys.Lett. 70 (2005) 313-319 · 10 pages, 2 figures
arxiv created 2004/10/18 · openalex publication_date 2005/04/12 · arxiv updated 2015/06/26 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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 is well reflected in GDR observables and hence insists on exact calculations in such cases.