• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Unified high-precision calculations of nuclei and neutron stars with a massively parallelized density-functional solver

Research Project

Project/Area Number 18H01209
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
Research InstitutionUniversity of Tsukuba

Principal Investigator

Nakatsukasa Takashi  筑波大学, 計算科学研究センター, 教授 (40333786)

Co-Investigator(Kenkyū-buntansha) 櫻井 鉄也  筑波大学, システム情報系, 教授 (60187086)
Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2019: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2018: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Keywords密度汎関数理論 / 集団運動 / 中性子星 / 原子核反応 / 原子核構造
Outline of Final Research Achievements

We study multi-scale many-nucleon (many-hadron) systems, using an universal theoretical framework, the (time-dependent) density functional theory ((TD)DFT). We aim at connecting microscopic nuclear structure/reaction with structure and elementary excitations in neutron-star crusts. Particularly, there are significant progresses in discovering roles of quantum shape fluctuations in low-energy nuclear reaction, and interplay between neutron superfluid and Coulomb lattice in exotic phases appearing in inner crust of neutron stars. In addition, we have also developed new computational methods and algorithms, and succeeded to achieve new three-dimensional solvers for finite-temperature DFT calculations which are required by these studies.

Academic Significance and Societal Importance of the Research Achievements

パルサーと呼ばれれる高速回転する中性子星からの電磁パルスに見られる不規則性(グリッチ)の起源は未だ謎のままであるが、解明には中性子星表面に近いクラスト領域における原子核と中性子超流体の間の相互作用解明が不可欠である。本研究ではこれまで無視されていた自己無撞着性を厳密に考慮した計算を実施し、この相互作用が中性子の可動性を真空中よりもむしろ増大させるという驚くべき結果に至った。この結果は過去の結果と逆であるが、その後の別グループの異なるアプローチによる解析でも同様の結果が得られている。グリッチの解釈に重大な影響がある結果として、今後さらに注目される可能性があり学術的意義が高い。

Report

(5 results)
  • 2022 Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (47 results)

All 2023 2022 2021 2020 2019 2018 Other

All Int'l Joint Research (3 results) Journal Article (11 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 11 results,  Open Access: 3 results) Presentation (31 results) (of which Int'l Joint Research: 24 results,  Invited: 17 results) Book (1 results) Funded Workshop (1 results)

  • [Int'l Joint Research] ワルシャワ工科大学(ポーランド)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Institute of Physics, Bhubaneswar(インド)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] 廈門大学(中国)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Fermi operator expansion method for nuclei and inhomogeneous matter with a nuclear energy density functional2023

    • Author(s)
      Takashi Nakatsukasa
    • Journal Title

      Physical Review C

      Volume: 107 Issue: 1 Pages: 015802-015802

    • DOI

      10.1103/physrevc.107.015802

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Microscopic collective inertial masses for nuclear reaction in the presence of nucleonic effective mass2022

    • Author(s)
      K. Wen, T. Nakatsukasa
    • Journal Title

      PHYSICAL REVIEW C

      Volume: 105 Issue: 3 Pages: 034603-034603

    • DOI

      10.1103/physrevc.105.034603

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Self-consistent energy density functional approaches to the crust of neutron stars2022

    • Author(s)
      T. Nakatsukasa
    • Journal Title

      EPJ Web of Conferences

      Volume: 260 Pages: 11041-11041

    • DOI

      10.1051/epjconf/202226011041

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Finite-amplitude method for collective inertia in spontaneous fission2021

    • Author(s)
      Washiyama Kouhei、Hinohara Nobuo、Nakatsukasa Takashi
    • Journal Title

      Physical Review C

      Volume: 103 Issue: 1 Pages: 014306-014306

    • DOI

      10.1103/physrevc.103.014306

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of dark matter on the nuclear and neutron star matter2020

    • Author(s)
      H. C. Das, A. Kumar,B. Kumar, S. K. Biswal, T. Nakatsukasa, A. Li and S. K. Patra,
    • Journal Title

      Monthly Notices of the Royal Astronomical Society

      Volume: 495 Issue: 4 Pages: 4893-4903

    • DOI

      10.1093/mnras/staa1435

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Nuclear structure and reaction with quantum shape fluctuation2020

    • Author(s)
      T. Nakatsukasa, Y. Kashiwaba, F. Ni, K. Washiyama, K. Wen, and N. Hinohara
    • Journal Title

      JPS Conference Proceedings

      Volume: 32 Pages: 010024-010024

    • DOI

      10.7566/jpscp.32.010024

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Collective inertial masses in nuclear reactions2020

    • Author(s)
      Kai Wen and Takashi Nakatsukasa
    • Journal Title

      Frontiers in Physics

      Volume: 8

    • DOI

      10.3389/fphy.2020.00016

    • NAID

      120007132776

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] GW170817 constraints on equations-of-states of a neutron star in the presence of WIMP dark matter2020

    • Author(s)
      Abdul Quddus, Grigorios Panotopoulos, Bharat Kumar, Shakeb Ahmad and S. K. Patra
    • Journal Title

      JPS Conference Proceedings

      Volume: 31 Pages: 011053-011053

    • DOI

      10.7566/jpscp.31.011053

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Neutron skins of heavy nuclei and tidal deformability of neutron star2020

    • Author(s)
      B. Kumar
    • Journal Title

      JPS Conference Proceedings

      Volume: 31 Pages: 011052-011052

    • DOI

      10.7566/jpscp.31.011052

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Self-consistent band calculation of the slab phase in the neutron-star crust2019

    • Author(s)
      Y. Kashiwaba and T. Nakatsukasa
    • Journal Title

      Phyical Review C

      Volume: 100 Issue: 3 Pages: 035804-035804

    • DOI

      10.1103/physrevc.100.035804

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Low-lying collective excited states in nonintegrable pairing models based on the stationary-phase approximation to the path integral2018

    • Author(s)
      Ni Fang、Hinohara Nobuo、Nakatsukasa Takashi
    • Journal Title

      Physical Review C

      Volume: 98 Issue: 6 Pages: 064327-064327

    • DOI

      10.1103/physrevc.98.064327

    • NAID

      120007128269

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] Requantizing the time-dependent density functional dynamics2022

    • Author(s)
      Takashi Nakatsukasa
    • Organizer
      YITP Workshop "Fundamentals in density functional theory (DFT2022)"
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Requantizing of TDDFT on collective subspace2022

    • Author(s)
      Takashi Nakatsukasa
    • Organizer
      The 21st international conference on Recent progress of many-body theories (RPMBT-XXI)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Alpha particle distribution in nuclei2022

    • Author(s)
      Takashi Nakatsukasa
    • Organizer
      Shapes and Symmetries in Nuclei: from Experiment to Theory
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Mass parameters for nuclear reaction models and nucleonic effective mass2022

    • Author(s)
      Takashi Nakatsukasa
    • Organizer
      YIPQS long-term workshop ``Mean-field and Cluster Dynamics in Nuclear Systems 2022
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Microscopic construction of a model Hamiltonian for low-energy nuclear reaction2022

    • Author(s)
      Takashi Nakatsukasa
    • Organizer
      Fudan open seminar in frontier of nuclear physics
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Shape and K-isomers in nuclei2022

    • Author(s)
      中務 孝
    • Organizer
      理研ワークショップ「反応断面積研究の新しい展望」
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 核内における局所的アルファ粒子生成指標2022

    • Author(s)
      中務孝、日野原伸生
    • Organizer
      日本物理学会第77回年次大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 原子核および中性子星における超流動ダイナミクス2021

    • Author(s)
      中務 孝
    • Organizer
      第8回HPCIシステム利用研究課題成果報告会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 原子核の平均場描像:密度依存相互作用と3体力2021

    • Author(s)
      中務 孝
    • Organizer
      第2回分野横断インフォーマルミーティング
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Efficient Contour Integral-based Eigenvalue Computation Using an Iterative Linear Solver with Shift-Invert Preconditioning2021

    • Author(s)
      Yasunori Futamura, Tetsuya Sakurai
    • Organizer
      HPC Asia 2021: The International Conference on High Performance Computing in Asia-Pacific Region
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Efficient Implementation of a Dimensionality Reduction Method Using a Complex Moment-Based Subspace2021

    • Author(s)
      Takahiro Yano, Yasunori Futamura, Akira Imakura, Tetsuya Sakurai
    • Organizer
      HPC Asia 2021: The International Conference on High Performance Computing in Asia-Pacific Region
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Parallel Contour Integral-Based Eigenvalue Computation using a Block Krylov Linear Solver with Shift-Invert Preconditioning2021

    • Author(s)
      Yasunori Futamura, Tetsuya Sakurai
    • Organizer
      SIAM Conference on Computational Science and Engineering (CSE21)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Microscopic collective inertial masses in nuclear reaction2020

    • Author(s)
      中務 孝
    • Organizer
      第3回クラスター階層領域研究会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Basic concepts of nuclear energy density functional theories2020

    • Author(s)
      Takashi Nakatsukasa
    • Organizer
      International School for Nuclear Physics
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] GW170817: Constraints on the moment of inertia PSR J0737-3039A2020

    • Author(s)
      Bharat Kumar
    • Organizer
      Centenary Celebration Conference on Nuclear Structure and Nuclear Reaction
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Collective motion, GCM, and requantization of TD mean field2019

    • Author(s)
      Takashi Nakatsukasa
    • Organizer
      Nuclear Physics Symposium "Challenges in theory of heavy nuclei"
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Self-consistent description of the inner crust of neutron stars2019

    • Author(s)
      Takashi Nakatsukasa
    • Organizer
      International workshop "Microscopic Approaches to Nuclear Structure and Reactions" (Gogny2019))
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Green’s function method in nuclear structure theory2019

    • Author(s)
      Takashi Nakatsukasa
    • Organizer
      International workshop on new generation nuclear density functionals
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Energy density functional approach to nuclear dynamics2019

    • Author(s)
      Takashi Nakatsukasa
    • Organizer
      XVII Workshop on Nuclear Physics (WONP2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Neutron skins of heavy nuclei and tidal polarizability of neutron star2019

    • Author(s)
      Bharat Kumar
    • Organizer
      The 15th International Symposium on Origin of Matter and Evolution of Galaxies (OMEG15)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] GW170817 constraints on the properties of a neutron star in the presence of WIMP dark matter2019

    • Author(s)
      A. Quddus, G. Panotopoulos, B. Kumar
    • Organizer
      The 15th International Symposium on Origin of Matter and Evolution of Galaxies (OMEG15)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] New effective interactions IOPB-I and G32019

    • Author(s)
      Bharat Kumar
    • Organizer
      The 18th CNS International Summer School (CNSSS19)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Neutron star astrophysics from gravitational waves and nuclear theory2019

    • Author(s)
      Bharat Kumar
    • Organizer
      5th workshop on many-body correlations in microscopic nuclear models
    • Related Report
      2019 Annual Research Report
  • [Presentation] Tidal deformability for neutron and hyperon stars2019

    • Author(s)
      Bharat Kumar
    • Organizer
      Quark and Compact Star 2019 (QCS2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 中性子星内殻シミュレーションとパルサー・グリッジ2019

    • Author(s)
      中務孝
    • Organizer
      シンポジウム「シミュレーションによる宇宙の基本法則と進化の解明に向けて」
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Selfconsistent band calculation for 1D neutron-star crust2019

    • Author(s)
      Takashi Nakatsukasa
    • Organizer
      Workshop on Nonequilibrium phenomena in superfluid systems
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Dipole response in exotic nuclei2018

    • Author(s)
      Takashi Nakatsukasa
    • Organizer
      ECT* workshop on Probing exotic structure of short-lived nuclei by electron scattering
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Theories of nuclear large amplitude collective motion2018

    • Author(s)
      Takashi Nakatsukasa
    • Organizer
      1st APCTP-TRIUMF joint workshop on understanding nuclei from different theoretical approaches
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Nuclear structure and reaction with quantum shape fluctuation2018

    • Author(s)
      Takashi Nakatsukasa
    • Organizer
      13th International Conference on nucleus-nucleus collisions (NN2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Multi-reference EDF theory alternative to GCM: Application to the pairing model2018

    • Author(s)
      Takashi Nakatsukasa and Fang Ni
    • Organizer
      2nd Tsukuba-CCS workshop on microscopic theories of nuclear structure and dynamics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Collective coordinate for pairing dynamics and requantization of TDHFB2018

    • Author(s)
      Fang Ni and Takashi Nakatsukasa
    • Organizer
      Fifth joint meeting of the Nuclear Physics Divisions in APS and JPS
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Book] Energy density functional methods for atomic nuclei2018

    • Author(s)
      Michael Bender, Aurel Bulgac, Thomas Duguet, Jean-Paul Ebran, Jon Engel, Michael McNeil Forbes, Markus Kortelainen, Takashi Nakatsukasa, Nicolas Schunck
    • Total Pages
      474
    • Publisher
      IOP Publishing
    • ISBN
      9780750314220
    • Related Report
      2018 Annual Research Report
  • [Funded Workshop] 2nd Tsukuba-CCS workshop on microscopic theories of nuclear structure and dynamics2018

    • Related Report
      2018 Annual Research Report

URL: 

Published: 2018-04-23   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi