1997/04/17 by В. В. Соколов, V. V. Sokolov, I. Rotter +4 · 2 citations
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Nonlinear Photonic Systems #Quantum chaos and dynamical systems #nucl-th
paper · pdf · doi:10.1103/physrevc.56.1031
published as Phys.Rev.C56:1031-1043,1997 · 20 pages, LaTeX, 3 ps-figures, to appear in PRC (July 1997)
arxiv created 1997/04/17 · openalex publication_date 1997/08/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A phenomenological schematic model of multipole giant resonances (GR's) is considered which treats the external interaction via common decay channels on the same footing as the coherent part of the internal residual interaction. The damping due to the coupling to the sea of complicated states is neglected. As a result, the formation of GR is governed by the interplay and competition of two kinds of collectivity, the internal and the external one. The mixing of the doorway components of a GR due to the external interaction significantly influences their multipole strengths, widths, and positions in energy. In particular, a narrow resonance state with an appreciable multipole strength is formed when the doorway components strongly overlap.