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Collective behavior in random interaction

Calvin W. Johnson·Hai Ah Nam
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Abstract

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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Calvin W. Johnson, Hai Ah Nam. 2006-01-31. Collective behavior in random interaction. https://arxiv.org/abs/nucl-th/0601093

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