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 journalArticle

68 Citations (Scopus)

Abstract

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
Volume77
Issue number3
DOIs
Publication statusPublished - 2008 Mar 25

Fingerprint

supernovae
phase diagrams
molecular dynamics
nuclear models
dynamic models
vapor phases
saturation
neutrons
nuclei
energy
symmetry
liquids

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics

Cite this

Phase diagram of nuclear "pasta" and its uncertainties in supernova cores. / Sonoda, Hidetaka; Watanabe, Gentaro; Sato, Katsuhiko; Yasuoka, Kenji; Ebisuzaki, Toshikazu.

In: Physical Review C - Nuclear Physics, Vol. 77, No. 3, 035806, 25.03.2008.

Research output: Contribution to journalArticle

Sonoda, Hidetaka ; Watanabe, Gentaro ; Sato, Katsuhiko ; Yasuoka, Kenji ; Ebisuzaki, Toshikazu. / Phase diagram of nuclear "pasta" and its uncertainties in supernova cores. In: Physical Review C - Nuclear Physics. 2008 ; Vol. 77, No. 3.
@article{1e64aacf39b24bd09fc56dbc31c5586a,
title = "Phase diagram of nuclear {"}pasta{"} and its uncertainties in supernova cores",
abstract = "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{\%}.",
author = "Hidetaka Sonoda and Gentaro Watanabe and Katsuhiko Sato and Kenji Yasuoka and Toshikazu Ebisuzaki",
year = "2008",
month = "3",
day = "25",
doi = "10.1103/PhysRevC.77.035806",
language = "English",
volume = "77",
journal = "Physical Review C - Nuclear Physics",
issn = "0556-2813",
publisher = "American Physical Society",
number = "3",

}

TY - JOUR

T1 - Phase diagram of nuclear "pasta" and its uncertainties in supernova cores

AU - Sonoda, Hidetaka

AU - Watanabe, Gentaro

AU - Sato, Katsuhiko

AU - Yasuoka, Kenji

AU - Ebisuzaki, Toshikazu

PY - 2008/3/25

Y1 - 2008/3/25

N2 - 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%.

AB - 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%.

UR - http://www.scopus.com/inward/record.url?scp=41549087816&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=41549087816&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.77.035806

DO - 10.1103/PhysRevC.77.035806

M3 - Article

VL - 77

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

SN - 0556-2813

IS - 3

M1 - 035806

ER -