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arXiv · 1910.06526

Collectivity of the electromagnetic transitions in near-threshold resonances

M. Płoszajczak·J. Okołowicz
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Abstract

Mixing of the shell model (SM) eigenstates due to the coupling via the common decay channel leads in many cases to the formation of a collective eigenstate which carries many features of the nearby decay channel. This generic mechanism in open quantum systems explains the phenomenological Ikeda diagram and generalizes it for various clusters/correlations in the vicinity of the respective cluster decay thresholds. The near-threshold collectivization of the SM states may also influence their electromagnetic decays. We discuss this phenomenon on the example of B(EL) decays of near-threshold 2+ states in 14C.

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M. Płoszajczak, J. Okołowicz. 2019-10-15. Collectivity of the electromagnetic transitions in near-threshold resonances. https://doi.org/10.1088/1742-6596%2F1643%2F1%2F012156

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