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

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

Research output: Contribution to journalArticlepeer-review

83 Citations (Scopus)


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%.

Original languageEnglish
Article number035806
JournalPhysical Review C - Nuclear Physics
Issue number3
Publication statusPublished - 2008 Mar 25

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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