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arXiv · 2005.13196

Quasiparticle properties of a single alpha particle in cold neutron matter

Eiji Nakano·Kei Iida·Wataru Horiuchi
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Abstract

Light clusters such as alpha particles and deuterons are predicted to occur in hot nuclear matter as encountered in intermediate-energy heavy-ion collisions and protoneutron stars. To examine the in-medium properties of such light clusters, we consider a much simplified system in which like an impurity, a single alpha particle is embedded in a zero-temperature, dilute gas of non-interacting neutrons. By adopting a non-selfconsistent ladder approximation for the effective interaction between the impurity and the gas, which is often used for analyses of Fermi polarons in a gas of ultracold atoms, we calculate the quasiparticle properties of the impurity, i.e., the energy shift, effective mass, quasiparticle residue, and damping rate.

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BibTeXRIS

Eiji Nakano, Kei Iida, Wataru Horiuchi. 2020-10-16. Quasiparticle properties of a single alpha particle in cold neutron matter. https://doi.org/10.1103/physrevc.102.055802

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