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arXiv · 1105.1669

Quadrupole collectivity in random two-body ensembles

Volha Abramkina·Alexander Volya
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Abstract

We conduct a systematic investigation of the nuclear collective dynamics that emerges in systems with random two-body interactions. We explore the development of the mean field and study its geometry. We investigate multipole collectivities in the many-body spectra and their dependence on the underlying two-body interaction Hamiltonian. The quadrupole-quadrupole interaction component appears to be dynamically dominating in two-body random ensembles. This quadrupole coherence leads to rotational spectral features and thus suggests the formation of the deformed mean-field of a specific geometry.

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Volha Abramkina, Alexander Volya. 2011-05-09. Quadrupole collectivity in random two-body ensembles. https://doi.org/10.1103/physrevc.84.024322

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