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Improvement of the nuclear equation of state for supernova simulations with the variational method starting from realistric nuclear forces

Research Project

Project/Area Number 25400275
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionWaseda University

Principal Investigator

TAKANO Masatoshi  早稲田大学, 理工学術院, 教授 (00257198)

Co-Investigator(Renkei-kenkyūsha) SUMIYOSHI KOHSUKE  沼津工業高校専門学校, 教養科, 教授 (30280720)
SUZUKI HIDEYUKI  東京理科大学, 理学部, 教授 (90211987)
YAMADA SHOICHI  早稲田大学, 理工学術院, 教授 (80251403)
Research Collaborator NAKAZATO KENICHIRO  九州大学, 基幹教育院, 助教 (80609347)
TOGASHI HAJIME  理化学研究所, 仁科加速器研究センター, 基礎科学特別研究員 (70733939)
Project Period (FY) 2013-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords核物質状態方程式 / 超新星爆発 / 中性子星 / 変分法
Outline of Final Research Achievements

We constructed an equation of state of hot uniform nuclear matter by the cluster variational method starting from realistic nuclear forces, and performed the Thomas-Fermi calculations for non-uniform nuclear matter to obtain a table of the nuclear equation of state applicable to supernova numerical simulations.
We also improved the variational method with explicit energy functionals for nuclear matter at zero temperature so as to treat the AV6' (and AV8') two-body potentials and the UIX three-body potential. We further constructed nuclear equations of state at finite temperatures with central forces, and study the impact of the uncertainties in the three-body repulsive force on the structure of proto-neutron stars. Our results are consistent with observational constraints on the neutron star radius obtained from GW170817.

Report

(6 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (47 results)

All 2018 2017 2016 2015 2014 2013 Other

All Journal Article (11 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 10 results,  Open Access: 8 results,  Acknowledgement Compliant: 6 results) Presentation (35 results) (of which Int'l Joint Research: 13 results,  Invited: 9 results) Remarks (1 results)

  • [Journal Article] New Table of Supernova Equation of State Using a Variational Method and Its Application to Astrophysical Compact Objects2018

    • Author(s)
      Hajime Togashi, Ken'ichiro Nakazato, Yuta Takehara, Sachiko Yamamuro, Hideyuki Suzuki, Masatoshi Takano
    • Journal Title

      JPS Conf. Proc.

      Volume: 20 Pages: 011021-011021

    • DOI

      10.7566/jpscp.20.011021

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A new equation of state for core-collapse supernovae based on realistic nuclear forces and including a full nuclear ensemble2017

    • Author(s)
      Furusawa S、Togashi H、Nagakura H、Sumiyoshi K、Yamada S、Suzuki H、Takano M
    • Journal Title

      Journal of Physics G: Nuclear and Particle Physics

      Volume: 44 Issue: 9 Pages: 094001-094001

    • DOI

      10.1088/1361-6471/aa7f35

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Nuclear equation of state for core-collapse supernova simulations with realistic nuclear forces2017

    • Author(s)
      H. Togashi, K. Nakazato, Y. Takehara, S. Yamamuro, H. Suzuki, M. Takano
    • Journal Title

      Nuclear Physics A

      Volume: 961 Pages: 78-105

    • DOI

      10.1016/j.nuclphysa.2017.02.010

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Variational calculations with explicit energy functionals for fermion systems at zero temperature2016

    • Author(s)
      Masatoshi Takano, Tatsuya Suzuki and Naoyuki Sakumichi
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 702 Pages: 012016-012016

    • DOI

      10.1088/1742-6596/702/1/012016

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Nuclear equation of state for core-collapse supernovae with realistic nuclear forces2015

    • Author(s)
      H. Togashi, Y. Takehara, S. Yamamuro, K. Nakazato, H. Suzuki, K. Sumiyoshi and M. Takano
    • Journal Title

      Proceedings of Science

      Volume: NIC XIII

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Equation of state for nuclear matter in core-collapse supernovae by the variational method2014

    • Author(s)
      H. Togashi, Y. Takehara, S. Yamamuro, K. Nakazato, H. Suzuki, K. Sumiyoshi and M. Takano
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 569 Pages: 012058-012058

    • DOI

      10.1088/1742-6596/569/1/012058

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Explicit energy functional for infinite nuclear matter with the tensor force2014

    • Author(s)
      M. Takano, K. Kato and M. Yamada
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 529 Pages: 012025-012025

    • DOI

      10.1088/1742-6596/529/1/012025

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Shell effects in hot nuclei and their influence on nuclear composition in supernova matter2014

    • Author(s)
      S. Nishimura and M. Takano
    • Journal Title

      AIP conference proceedings

      Volume: 1594 Pages: 239-244

    • DOI

      10.1063/1.4874076

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Application of the nuclear equation of state obtained by the variational method to core-collapse supernovae2014

    • Author(s)
      H. Togashi, M. Takano, K. Sumiyoshi and K. Nakazato
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 2014 Issue: 2 Pages: 1-22

    • DOI

      10.1093/ptep/ptu020

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] New Nuclear Equation of State for Core-Collapse Supernovae with the Variational Method2014

    • Author(s)
      H. Togashi, S. Yamamuro, K. Nakazato, M. Takano, H. Suzuki and K. Sumiyoshi
    • Journal Title

      EPJ Web of Conferences

      Volume: 66 Pages: 07026-07026

    • DOI

      10.1051/epjconf/20146607026

    • Related Report
      2013 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 現実的核力を用いた変分法と核物質状態方程式2013

    • Author(s)
      鷹野正利
    • Journal Title

      原子核研究

      Volume: 57 Suppl.4 Pages: 39-42

    • Related Report
      2013 Research-status Report
  • [Presentation] 現実的核力に基づく超新星物質状態方程式の構築2018

    • Author(s)
      富樫甫
    • Organizer
      日本物理学会第73回年次大会(東京理科大学)
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] The nuclear equation of state obtained by the variational method with explicit energy functionals and its application to ptoro-neutron stars2018

    • Author(s)
      K. Shoji, H. Togashi, and M. Takano
    • Organizer
      International conference on “Physics of core-collapse supernovae and compact star formations
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Variational method with explicit energy functionals for nuclear matter including the Fujima-Miyazawa three-nucleon force2018

    • Author(s)
      R. Yokota, and M. Takano
    • Organizer
      International conference on “Physics of core-collapse supernovae and compact star formations
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Supernova equation of state with realistic nuclear interactions and hyperon mixing in hot dense matter2018

    • Author(s)
      H. Togashi, M. Takano, K. Nakazato, Y. Takehara, S. Yamamuro, H. Suzuki, K. Sumiyoshi and E. Hiyama
    • Organizer
      International conference on “Physics of core-collapse supernovae and compact star formations
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Properties of a variational equation of state in core-collapse supernovae2018

    • Author(s)
      H. Togashi, M. Takano, K. Nakazato, Y. Takehara, S. Yamamuro, H. Suzuki and K. Sumiyoshi,
    • Organizer
      PACIFIC 2018
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Variational approach to hot and dense matter in compact stars2017

    • Author(s)
      H. Togashi, M. Takano, K. Nakazato, Y. Takehara, S. Yamamuro, H. Suzuki, K. Sumiyoshi and E. Hiyama
    • Organizer
      International Workshop on Hadron and Nuclear Physics 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Variational method with explicit energy functionals for nuclear matter taking into account the two-pion-exchange three-nucleon force2017

    • Author(s)
      R. Yokota, and M. Takano
    • Organizer
      Reimei Workshop 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Nuclear equation of state with realistic nuclear force2017

    • Author(s)
      H. Togashi, M. Takano, K. Nakazato, Y. Takehara, S. Yamamuro, H. Suzuki, K. Sumiyoshi and E. Hiyama
    • Organizer
      ECT* Workshop “New perspectives on Neutron Star Interiors
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 現実的核力に基づく核物質状態方程式の研究と今後の展望2017

    • Author(s)
      富樫甫
    • Organizer
      RIBF理論若手放談会:エキゾチック核物理の広がり
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] 変分法による核物質状態方程式-Supernova EOSテーブル完成までの道のり-2017

    • Author(s)
      富樫甫
    • Organizer
      研究会「原子核のサイズと状態方程式の物理」
    • Place of Presentation
      九州大学
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] スピン・軌道力を考慮した一様核物質に対するエネルギー汎関数を用いた変分法の改良2017

    • Author(s)
      鷹野正利, 堀川峻洋
    • Organizer
      日本物理学会
    • Place of Presentation
      大阪大学
    • Related Report
      2016 Research-status Report
  • [Presentation] エネルギー汎関数を用いた変分法による3体核力2π交換項を考慮した中性子物質のエネルギー計算2017

    • Author(s)
      横田玲子、鷹野正利
    • Organizer
      日本物理学会
    • Place of Presentation
      大阪大学
    • Related Report
      2016 Research-status Report
  • [Presentation] New table of supernova equation of state using a variational method and its application to astrophysical compact objects2017

    • Author(s)
      H. Togashi, K. Nakazato, Y. Takehara, S. Yamamuro, H. Suzuki and M. Takano
    • Organizer
      QCS2017
    • Place of Presentation
      kyoto
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Variational method with an explicit energy functional for neutron matter with the two-pion-exchange three-nucleon force2016

    • Author(s)
      R. Yokota and M. Takano
    • Organizer
      NSMAT2016
    • Place of Presentation
      Sendai
    • Year and Date
      2016-11-21
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] New nuclear equation of state for core-collapse supernovae with realistic nuclear forces2016

    • Author(s)
      H. Togashi, K. Nakazato, Y. Takehara, S. Yamamuro, H. Suzuki and M. Takano
    • Organizer
      International conference “Compact stars and gravitational waves
    • Place of Presentation
      Kyoto
    • Year and Date
      2016-10-31
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Variational method with explicit energy functionals for nuclear matter2016

    • Author(s)
      M. Takano
    • Organizer
      NPCSM2016
    • Place of Presentation
      kyoto
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Microscopic equation of state for supernova matter with realistic nuclear forces2015

    • Author(s)
      H. Togashi, K. Nakazato, Y. Takehara, S. Yamamuro, H. Suzuki and M. Takano
    • Organizer
      Symposium on Quarks to Universe in Computational Science (QUCS2015)
    • Place of Presentation
      Nara, Japan
    • Year and Date
      2015-11-05
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] スピン・軌道力を考慮した中性子物質に対するエネルギー汎関数を用いた変分法II2015

    • Author(s)
      鷹野正利
    • Organizer
      日本物理学会
    • Place of Presentation
      大阪市立大学
    • Year and Date
      2015-09-25
    • Related Report
      2015 Research-status Report
  • [Presentation] Microscopic nuclear equation of state for core-collapse supernovae with realistic nuclear forces2015

    • Author(s)
      H. Togashi, K. Nakazato, Y. Takehara, S. Yamamuro, H. Suzuki and M. Takano
    • Organizer
      Numazu Workshop 2015
    • Place of Presentation
      Mishima Japan
    • Year and Date
      2015-09-03
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] Variational calculations with explicit energy functional for fermion systems at zero temperature2015

    • Author(s)
      M. Takano, T. Suzuki and N. Sakumichi
    • Organizer
      The 18th International Conference on Recent Progress in Many-Body Theories
    • Place of Presentation
      Buffalo, USA
    • Year and Date
      2015-08-17
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Equation of state for nuclear matter in core-collapse supernovae with realistic nuclear forces2015

    • Author(s)
      H. Togashi, K. Nakazato, Y. Takehara, S. Yamamuro, H. Suzuki and M. Takano
    • Organizer
      International Symposium on “Physics and Astronomy of Neutron Stars and Supernovae”
    • Place of Presentation
      Mitaka, Japan
    • Year and Date
      2015-06-22
    • Related Report
      2015 Research-status Report
  • [Presentation] Variational study of nuclear equation of state fore core-collapse supernovae and hyperonic neutron stars2015

    • Author(s)
      H. Togashi et al.
    • Organizer
      International Workshop on NEUTRINO PHYSICS and ASTROPHYSICS
    • Place of Presentation
      Istanbul, Turkey
    • Year and Date
      2015-03-16
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] Variational study of the supernova equation of state with realistic nuclear forces2014

    • Author(s)
      H. Togashi, Y. Takehara, S. Yamamuro, K. Nakazato, H. Suzuki, K. Sumiyoshi and M. Takano
    • Organizer
      4th Joint Meeting of the Nuclear Physics Divisions of the American Physical Society and the Physical Society of Japan
    • Place of Presentation
      Hawaii, USA
    • Year and Date
      2014-10-09
    • Related Report
      2014 Research-status Report
  • [Presentation] An Explicit Energy Functional for Neutron Matter Taking into Account the Spin-Orbit Forces2014

    • Author(s)
      M. Takano and K. Kato
    • Organizer
      4th Joint Meeting of the Nuclear Physics Divisions of the American Physical Society and the Physical Society of Japan
    • Place of Presentation
      Hawaii, USA
    • Year and Date
      2014-10-09
    • Related Report
      2014 Research-status Report
  • [Presentation] 有限温度一様核物質に対するエネルギー汎関数を用いた変分法2014

    • Author(s)
      加藤浩平、鷹野正利
    • Organizer
      新学術領域研究『実験と観測で解き明かす中性子星の核物質』第3回研究会
    • Place of Presentation
      熱川
    • Year and Date
      2014-09-23
    • Related Report
      2014 Research-status Report
  • [Presentation] NUCLEAR EQUARION OF STATE FOR CORE-COLLAPSE SUPERNOVAE WITH REALISTIC NUCLEAR FORCES2014

    • Author(s)
      H. Togashi, Y. Takehara, S. Yamamuro, K. Nakazato, H. Suzuki, K. Sumiyoshi and M. Takano
    • Organizer
      13th Symposium on Nuclei in the Cosmos
    • Place of Presentation
      Debrecen, Hungary
    • Year and Date
      2014-07-07 – 2014-07-11
    • Related Report
      2014 Research-status Report
  • [Presentation] Equation of state for nuclear matter in core-collapse supernovae by the variational method2014

    • Author(s)
      H. Togashi, Y. Takehara, S. Yamamuro, K. Nakazato, H. Suzuki, K. Sumiyoshi and M. Takano
    • Organizer
      3rd International Workshop on State of the Art in Nuclear Cluster Physics (SOTANCP3)
    • Place of Presentation
      Yokohama
    • Year and Date
      2014-05-28
    • Related Report
      2014 Research-status Report
  • [Presentation] 超新星状態方程式テーブルの作成に向けた効率的な非一様相計算2014

    • Author(s)
      竹原裕太, 山室早智子, 中里健一郎, 鈴木英之, 富樫甫, 鷹野正利
    • Organizer
      日本天文学会
    • Place of Presentation
      国際基督教大学
    • Related Report
      2013 Research-status Report
  • [Presentation] The shell effects in hot nuclei and their influence on the nuclear compositions in supernova matter2013

    • Author(s)
      Suguru Nishimura and Masatoshi Takano
    • Organizer
      The 12th International Symposium on Origin of Matter and Evolution of Galaxies
    • Place of Presentation
      つくば国際会議場
    • Related Report
      2013 Research-status Report
  • [Presentation] Explicit Energy Functional for Infinite Nuclear Matter with the Tensor Force2013

    • Author(s)
      M. Takano, M. Yamada and K. Kato
    • Organizer
      Recent Progress on Many-Body Theories 17
    • Place of Presentation
      Rostock, Germany
    • Related Report
      2013 Research-status Report
  • [Presentation] New Nuclear Equation of State for Core-Collapse Supernovae with the Variational Method2013

    • Author(s)
      H. Togashi, S. Yamamuro, K. Nakazato, M. Takano, H. Suzuki and K. Sumiyoshi
    • Organizer
      The 25th International Nuclear Physics Conference
    • Place of Presentation
      Firenze, Itary
    • Related Report
      2013 Research-status Report
  • [Presentation] クラスター変分法による有限温度核物質状態方程式とニュートリノを考慮した重力崩壊型超新星爆発シミュレーション

    • Author(s)
      富樫甫,竹原裕太,山室早智子,中里健一郎,鷹野正利,鈴木英之,住吉光介
    • Organizer
      日本物理学会
    • Place of Presentation
      東海大学湘南キャンパス
    • Related Report
      2013 Research-status Report
  • [Presentation] 一様核物質に対するエネルギー汎関数を用いた変分法の改良III

    • Author(s)
      鷹野正利,加藤浩平,山田勝美
    • Organizer
      日本物理学会
    • Place of Presentation
      東海大学湘南キャンパス
    • Related Report
      2013 Research-status Report
  • [Presentation] 一様核物質に対する変分法の展望

    • Author(s)
      鷹野正利
    • Organizer
      新学術領域「素核宇宙融合による計算科学に基づいた重層的物質構造の解明」のまとめと今後を語る研究会
    • Place of Presentation
      旅館すがわら
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] Nuclear equation of state with the variational method and its application to supernova simulations

    • Author(s)
      H. Togashi, M. Takano, K. Sumiyoshi and K. Nakazato
    • Organizer
      Hadron Nuclear Physics 2013
    • Place of Presentation
      Zhangjiajie, China
    • Related Report
      2013 Research-status Report
  • [Remarks] Togashi EOS公開HP

    • URL

      http://www.np.phys.waseda.ac.jp/EOS/index.html

    • Related Report
      2017 Annual Research Report

URL: 

Published: 2014-07-25   Modified: 2019-07-29  

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