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ID: 285736.0, MPI für Kernphysik / Theory of Chaos, Fields and Statistical Inference
Distribution of Spectral Widths and Preponderance of Spin-0 Ground States in Nuclei
Authors:Papenbrock, T.; Weidenmüller, Hans A.
Language:English
Date of Publication (YYYY-MM-DD):2004-09-23
Title of Journal:Physical Review Letters
Journal Abbrev.:Phys. Rev. Lett.
Volume:93
Sequence Number of Article:132503
Copyright:©2004 The American Physical Society
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:We use a single j-shell model with random two-body interactions to derive closed expressions for the distribution of and the correlations between spectral widths of different spins. This task is facilitated by introducing two-body operators whose squared spectral widths sum up to the squared spectral width of the random Hamiltonian. The spin-0 width is characterized by a relatively large average value and small fluctuations, while the width of maximum spin has the largest average and the largest fluctuations. The approximate proportionality between widths and spectral radii explains the preponderance of spin-0 ground states.
External Publication Status:published
Document Type:Article
Communicated by:N.N.
Affiliations:MPI für Kernphysik/Guest Groups and Emeriti/Theory of Chaos, Fields and Statistical Inference (H.A. Weidenmüller et al.)
External Affiliations:Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
Identifiers:DOI:10.1103/PhysRevLett.93.132503
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