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Nuclear matter equation of state including few-nucleon correlations (Aleq 4)

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arxiv 1411.4593 v1 pith:4GGYSDJC submitted 2014-11-17 nucl-th

Nuclear matter equation of state including few-nucleon correlations (Aleq 4)

classification nucl-th
keywords matternuclearcorrelationscontinuumequationlightpropertiesquasiparticle
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Light clusters (mass number $A \leq 4$) in nuclear matter at subsaturation densities are described using a quantum statistical approach. In addition to self-energy and Pauli-blocking, effects of continuum correlations are taken into account to calculate the quasiparticle properties and abundances of light elements. Medium-modified quasiparticle properties are important ingredients to derive a nuclear matter equation of state applicable in the entire region of warm dense matter below saturation density. Moreover, the contribution of continuum states to the equation of state is considered. The effect of correlations within the nuclear medium on the quasiparticle energies is estimated. The properties of light clusters and continuum correlations in dense matter are of interest for nuclear structure calculations, heavy ion collisions, and for astrophysical applications such as the formation of neutron stars in core-collapse supernovae.

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  1. Impact of Effective Nucleon Mass and Multineutron States on the Equation of State for Core-Collapse Supernovae

    nucl-th 2026-04 unverdicted novelty 6.0

    Including multineutron states in supernova equations of state reduces unbound neutron fractions, raises proton chemical potentials, promotes heavier nuclei, and lowers overall free energy in neutron-rich conditions.