Export citation

Export citation

Choose format for download:

Download Citation

    CREX and PREX-II reconciled within nuclear energy density functional theory

    Panagiota Papakonstantinou*

    • *Contact author: ppapakon@ibs.re.kr

    Phys. Rev. C 114, 034331 – Published 25 September, 2026

    DOI: https://doi.org/10.1103/2rt9-cknc

    Abstract

    The CREX and PREX-II measurements of the neutron-skin thickness of Ca48 and Pb208 challenge standard nuclear energy-density functional (EDF) descriptions of nuclei and nuclear matter. It is shown that the apparent tension arises from an implicit constraint in current EDF parametrizations that ties the density dependence of the functional at the dilute nuclear surface to that of uniform matter near saturation. Relaxing this surface-bulk coupling and independently constraining the dilute-density sector, while preserving realistic saturation properties and the high-density equation of state, yields EDFs that simultaneously reproduce the neutron skins of both nuclei, their electric dipole polarizabilities, and neutron-star mass-radius relations. The established correlation between the neutron-skin thickness and the symmetry-energy slope parameter L at saturation is retained but becomes substantially broader. The results show that current neutron-skin data do not require extreme values of L and highlight an underconstrained degree of freedom associated with low-density nuclear matter.

    Physics Subject Headings (PhySH)

    Authorization Required

    We need you to provide your credentials before accessing this content.

    References (Subscription Required)

    Outline

    Information

    Sign In to Your Journals Account

    Filter

    Filter

    Article Lookup

    Enter a citation