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arXiv · 2309.01533

Light clusters in the liquid proto-neutron star inner crust

H. Dinh Thi·A. F. Fantina·F. Gulminelli
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Abstract

Being born hot from core-collapse supernova, the crust of the proto-neutron star is expected to be made of a Coulomb liquid and composed of an ensemble of different nuclear species. In this work, we study the beta-equilibrated proto-neutron-star crust in the liquid phase in a self-consistent multi-component approach, employing a compressible liquid-drop description of the ions including the ion centre-of-mass motion. Particular care is also devoted to the calculation of the rearrangement term, thus ensuring thermodynamic consistency. We compare the results of the multi-component plasma calculations with those obtained within a one-component (single-nucleus) approach, showing that important differences arise between the predictions of the two treatments. In particular, the abundances of helium clusters become important using a complete multi-component plasma approach, and eventually dominate the whole distribution at higher temperature in the crust.

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H. Dinh Thi, A. F. Fantina, F. Gulminelli. 2023-09-04. Light clusters in the liquid proto-neutron star inner crust. https://doi.org/10.1140/epja%2Fs10050-023-01199-x

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