Collective behavior in random interaction

Details Collective behavior in random interaction Collective behavior in random interaction

2006-01-30

arxiv.org/abs/nucl-th/0601093v2

Physics

Nuclear Physics

Nuclear Theory

6 pages, 5 figures; Contribution to XXIX Symposium on Nuclear Physics, Cocoyoc, Mexico, 2006; minor revision to text and refer

Scientific paper

Recent investigations have looked at the many-body spectra of random two-body interactions. In fermion systems, such as the interacting shell model, one finds pairing-like spectra, while in boson systems, such as IBM-1, one finds rotational and vibrational spectra. We discuss the search for random ensembles of fermion interactions that yield rotational and vibrational spectra, and in particular present results from a new ensemble, the ``random quadrupole-quadrupole ensemble''

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