Phase diagram of nuclear "pasta" and its uncertainties in supernova cores

Hidetaka Sonoda, Gentaro Watanabe, Katsuhiko Sato, Kenji Yasuoka, Toshikazu Ebisuzaki

研究成果: Article査読

73 被引用数 (Scopus)

抄録

We examine the model dependence of the phase diagram of inhomogeneous nulcear matter in supernova cores using the quantum molecular dynamics (QMD). Inhomogeneous matter includes crystallized matter with nonspherical nuclei-"pasta" phases-and the liquid-gas phase-separating nuclear matter. Major differences between the phase diagrams of the QMD models can be explained by the energy of pure neutron matter at low densities and the saturation density of asymmetric nuclear matter. We show the density dependence of the symmetry energy is also useful to understand uncertainties of the phase diagram. We point out that, for typical nuclear models, the mass fraction of the pasta phases in the later stage of the collapsing cores is higher than 10-20%.

本文言語English
論文番号035806
ジャーナルPhysical Review C - Nuclear Physics
77
3
DOI
出版ステータスPublished - 2008 3 25

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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