Light clusters in dilute heavy-baryon admixed nuclear matter. (arXiv:2009.00357v3 [nucl-th] UPDATED)
<a href="http://arxiv.org/find/nucl-th/1/au:+Sedrakian_A/0/1/0/all/0/1">Armen Sedrakian</a>
We study the composition of nuclear matter at sub-saturation densities,
non-zero temperatures, and isospin asymmetry, under the conditions
characteristic of binary neutron star mergers, stellar collapse, and low-energy
heavy-ion collisions.
The composition includes light clusters with mass number $Ale 4$, a heavy
nucleus ($isotope[56]{Fe}$), the $Delta$-resonances, the isotriplet of pions,
as well as the $Lambda$ hyperon. The nucleonic mean-fields are computed from a
zero-range density functional, whereas the pion-nucleon interactions are
treated to leading order in chiral perturbation theory. We show that with
increasing temperature and/or density the composition of matter shifts from
light-cluster to heavy baryon dominated one, the transition taking place nearly
independent of the magnitude of the isospin. Our findings highlight the
importance of simultaneous treatment of light clusters and heavy baryons in the
astrophysical and heavy-ion physics contexts.
We study the composition of nuclear matter at sub-saturation densities,
non-zero temperatures, and isospin asymmetry, under the conditions
characteristic of binary neutron star mergers, stellar collapse, and low-energy
heavy-ion collisions.
The composition includes light clusters with mass number $Ale 4$, a heavy
nucleus ($isotope[56]{Fe}$), the $Delta$-resonances, the isotriplet of pions,
as well as the $Lambda$ hyperon. The nucleonic mean-fields are computed from a
zero-range density functional, whereas the pion-nucleon interactions are
treated to leading order in chiral perturbation theory. We show that with
increasing temperature and/or density the composition of matter shifts from
light-cluster to heavy baryon dominated one, the transition taking place nearly
independent of the magnitude of the isospin. Our findings highlight the
importance of simultaneous treatment of light clusters and heavy baryons in the
astrophysical and heavy-ion physics contexts.
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