### 抄録

We construct new equations of state for baryons at sub-nuclear densities for the use in core-collapse supernova simulations. The abundance of various nuclei is obtained together with thermodynamic quantities. The formulation is an extension of the previous model, in which we adopted the relativistic mean field theory with the TM1 parameter set for nucleons, the quantum approach for d, t, h and α as well as the liquid drop model for the other nuclei under the nuclear statistical equilibrium. We reformulate the model of the light nuclei other than d, t, h and α based on the quasi-particle description. Furthermore, we modify the model so that the temperature dependences of surface and shell energies of heavy nuclei could be taken into account. The pasta phases for heavy nuclei and the Pauli- and self-energy shifts for d, t, h and α are taken into account in the same way as in the previous model. We find that nuclear composition is considerably affected by the modifications in this work, whereas thermodynamical quantities are not changed much. In particular, the washout of shell effect has a great impact on the mass distribution above T∼1 MeV. This improvement may have an important effect on the rates of electron captures and coherent neutrino scatterings on nuclei in supernova cores.

元の言語 | English |
---|---|

ページ（範囲） | 188-207 |

ページ数 | 20 |

ジャーナル | Nuclear Physics A |

巻 | 957 |

DOI | |

出版物ステータス | Published - 2017 1 1 |

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### ASJC Scopus subject areas

- Nuclear and High Energy Physics

### これを引用

*Nuclear Physics A*,

*957*, 188-207. https://doi.org/10.1016/j.nuclphysa.2016.09.002

**Supernova equations of state including full nuclear ensemble with in-medium effects.** / Furusawa, Shun; Sumiyoshi, Kohsuke; Yamada, Shoichi; Suzuki, Hideyuki.

研究成果: Article

*Nuclear Physics A*, 巻. 957, pp. 188-207. https://doi.org/10.1016/j.nuclphysa.2016.09.002

}

TY - JOUR

T1 - Supernova equations of state including full nuclear ensemble with in-medium effects

AU - Furusawa, Shun

AU - Sumiyoshi, Kohsuke

AU - Yamada, Shoichi

AU - Suzuki, Hideyuki

PY - 2017/1/1

Y1 - 2017/1/1

N2 - We construct new equations of state for baryons at sub-nuclear densities for the use in core-collapse supernova simulations. The abundance of various nuclei is obtained together with thermodynamic quantities. The formulation is an extension of the previous model, in which we adopted the relativistic mean field theory with the TM1 parameter set for nucleons, the quantum approach for d, t, h and α as well as the liquid drop model for the other nuclei under the nuclear statistical equilibrium. We reformulate the model of the light nuclei other than d, t, h and α based on the quasi-particle description. Furthermore, we modify the model so that the temperature dependences of surface and shell energies of heavy nuclei could be taken into account. The pasta phases for heavy nuclei and the Pauli- and self-energy shifts for d, t, h and α are taken into account in the same way as in the previous model. We find that nuclear composition is considerably affected by the modifications in this work, whereas thermodynamical quantities are not changed much. In particular, the washout of shell effect has a great impact on the mass distribution above T∼1 MeV. This improvement may have an important effect on the rates of electron captures and coherent neutrino scatterings on nuclei in supernova cores.

AB - We construct new equations of state for baryons at sub-nuclear densities for the use in core-collapse supernova simulations. The abundance of various nuclei is obtained together with thermodynamic quantities. The formulation is an extension of the previous model, in which we adopted the relativistic mean field theory with the TM1 parameter set for nucleons, the quantum approach for d, t, h and α as well as the liquid drop model for the other nuclei under the nuclear statistical equilibrium. We reformulate the model of the light nuclei other than d, t, h and α based on the quasi-particle description. Furthermore, we modify the model so that the temperature dependences of surface and shell energies of heavy nuclei could be taken into account. The pasta phases for heavy nuclei and the Pauli- and self-energy shifts for d, t, h and α are taken into account in the same way as in the previous model. We find that nuclear composition is considerably affected by the modifications in this work, whereas thermodynamical quantities are not changed much. In particular, the washout of shell effect has a great impact on the mass distribution above T∼1 MeV. This improvement may have an important effect on the rates of electron captures and coherent neutrino scatterings on nuclei in supernova cores.

KW - Core-collapse supernova

KW - Equation of state

UR - http://www.scopus.com/inward/record.url?scp=84987947904&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84987947904&partnerID=8YFLogxK

U2 - 10.1016/j.nuclphysa.2016.09.002

DO - 10.1016/j.nuclphysa.2016.09.002

M3 - Article

AN - SCOPUS:84987947904

VL - 957

SP - 188

EP - 207

JO - Nuclear Physics A

JF - Nuclear Physics A

SN - 0375-9474

ER -