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Can tetraneutron exist from theoretical point of view?

I. V. Simenog·B. E. Grinyuk·Yu. M. Bidasyuk
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Abstract

A theoretical possibility is shown for the bound state of a tetraneutron to exist in the case of the proposed neutron-neutron potentials in the singlet state with two attractive wells separated by a repulsive barrier. The anomalous behaviours are revealed for the calculated size, density distribution, and pair correlation functions of a hypothetical tetraneutron.

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I. V. Simenog, B. E. Grinyuk, Yu. M. Bidasyuk. 2005-11-02. Can tetraneutron exist from theoretical point of view?. https://arxiv.org/abs/nucl-th/0511006

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