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Forces in the quark-gluon plasma -- unified description by the theory of open quantum systems

Research Project

Project/Area Number 18K13538
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
Research InstitutionOsaka University

Principal Investigator

Akamatsu Yukinao  大阪大学, 大学院理学研究科, 助教 (30616363)

Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsクォーク・グルーオン・プラズマ / クォーコニウム抑制 / 量子開放系 / 量子散逸 / Lindblad方程式 / Lindblad形式 / クォーコニウム / 非線形確率論的シュレーディンガー方程式
Outline of Final Research Achievements

In this project, we describe quarkonium in the quark-gluon plasma as an open quantum system. The forces of quarkonium are classified into potential force, random force by collisions, and friction force by dissipation, and they depend on the internal color degrees of freedom of quarkonium. Although quarkonium may seem a simple system, its dynamics is rich and complex. I derived and simulated the master equation, which describes these forces in the quantum mechanical manner. We analyzed the following two points in detail; the minimum order of gradient expansion in the master equation by which quarkonium can get equilibrated, and the validity of dipole approximation for quarkonium.

Academic Significance and Societal Importance of the Research Achievements

クォーク・グルーオン・プラズマ(QGP)中のクォーコニウムには、様々な異なる種類の力が働く。さらに、クォーコニウムはカラー1重項と8重項という2つの内部状態をとることができ、力の働き方がそれによって異なる。このように多彩で複雑な系であるクォーコニウムを用いて、相対論的重イオン衝突実験で作られたQGPの基本的性質(相関長や拡散係数)が明らかにされつつある。我々は、クォーコニウムをQGP環境と相互作用する量子系(量子開放系)として記述し、そのダイナミクスを支配する方程式を導き、その性質を詳細に分析した。これにより、実験データからQGPの基本的性質を明らかにするための理論的な道筋を整備した。

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (41 results)

All 2022 2021 2020 2019 2018 Other

All Int'l Joint Research (5 results) Journal Article (12 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 12 results,  Open Access: 5 results) Presentation (24 results) (of which Int'l Joint Research: 15 results,  Invited: 12 results)

  • [Int'l Joint Research] University of Stavanger(ノルウェー)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] University of Stavanger(ノルウェー)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] Stony Brook University(米国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] University of Stavanger(ノルウェー)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] Stony Brook University(米国)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Simulation of Lindblad equations for quarkonium in the quark-gluon plasma2022

    • Author(s)
      Miura Takahiro、Akamatsu Yukinao、Asakawa Masayuki、Kaida Yukana
    • Journal Title

      Physical Review D

      Volume: 106 Issue: 7 Pages: 1-12

    • DOI

      10.1103/physrevd.106.074001

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dynamics of in-medium quarkonia in SU(3) and SU(2) gauge theories2022

    • Author(s)
      Akamatsu Yukinao、Asakawa Masayuki、Kajimoto Shiori
    • Journal Title

      Physical Review D

      Volume: 105 Issue: 5 Pages: 1-18

    • DOI

      10.1103/physrevd.105.054036

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Quarkonium in quark?gluon plasma: Open quantum system approaches re-examined2022

    • Author(s)
      Akamatsu Y.
    • Journal Title

      Progress in Particle and Nuclear Physics

      Volume: 123 Pages: 103932-103932

    • DOI

      10.1016/j.ppnp.2021.103932

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Nonequilibrium evolution of quarkonium in medium2022

    • Author(s)
      Akamatsu Yukinao、Miura Takahiro
    • Journal Title

      EPJ Web of Conferences

      Volume: 258 Pages: 01006-01006

    • DOI

      10.1051/epjconf/202225801006

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Trace preserving quantum dynamics using a novel reparametrization-neutral summation-by-parts difference operator2021

    • Author(s)
      Alund Oskar、Akamatsu Yukinao、Lauren Fredrik、Miura Takahiro、Nordstrom Jan、Rothkopf Alexander
    • Journal Title

      Journal of Computational Physics

      Volume: 425 Pages: 109917-109917

    • DOI

      10.1016/j.jcp.2020.109917

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Approach to thermalization and hydrodynamics2021

    • Author(s)
      Akamatsu Yukinao
    • Journal Title

      Nuclear Physics A

      Volume: 1005 Pages: 122000-122000

    • DOI

      10.1016/j.nuclphysa.2020.122000

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Time Evolution of a Quarkonium towards the Thermal Equilibrium in the Quark-gluon Plasma2020

    • Author(s)
      Miura Takahiro、Akamatsu Yukinao、Asakawa Masayuki、Rothkopf Alexander
    • Journal Title

      JPS Conference Proceedings JPS Conf.Proc. 32 (2020) 010084

      Volume: 32 Pages: 0100841-3

    • DOI

      10.7566/jpscp.32.010084

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Quantum Brownian motion of a heavy quark pair in the quark-gluon plasma2020

    • Author(s)
      T. Miura, Y. Akamatsu, M. Asakawa, and A. Rothkopf
    • Journal Title

      Physical Review D

      Volume: 101 Issue: 3 Pages: 1-15

    • DOI

      10.1103/physrevd.101.034011

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Transits of the QCD critical point2019

    • Author(s)
      Akamatsu Yukinao、Teaney Derek、Yan Fanglida、Yin Yi
    • Journal Title

      Physical Review C

      Volume: 100 Issue: 4 Pages: 1-23

    • DOI

      10.1103/physrevc.100.044901

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Quantum dynamical dissociation of quarkonia by wave function decoherence in quark-gluon plasma2019

    • Author(s)
      S. Kajimoto, Y. Akamatsu, M. Asakawa, and A. Rothkopf
    • Journal Title

      Nuclear Physics

      Volume: A982 Pages: 711-714

    • DOI

      10.1016/j.nuclphysa.2018.12.005

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Scaling Properties of Out-of-equilibrium Hydrodynamic Fluctuations near the QCD Critical Point2019

    • Author(s)
      Akamatsu Yukinao、Teaney Derek、Yan Fanglida、Yin Yi
    • Journal Title

      Nuclear Physics A

      Volume: 982 Pages: 875-878

    • DOI

      10.1016/j.nuclphysa.2018.10.031

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Quantum dissipation of a heavy quark from a nonlinear stochastic Schroedinger equation2018

    • Author(s)
      Y. Akamatsu, S. Kajimoto, M. Asakawa, and A. Rothkopf
    • Journal Title

      JHEP

      Volume: 1807 Issue: 7 Pages: 0-18

    • DOI

      10.1007/jhep07(2018)029

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Quarkonium and Open Quantum Systems2022

    • Author(s)
      Yukinao Akamatsu
    • Organizer
      The Quantumness of Hard Probes
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Quarkonium as an open quantum system in the quark-gluon plasma2022

    • Author(s)
      Yukinao Akamatsu
    • Organizer
      REIMEI Workshop on “Open Quantum Mechanics in Nuclear, Hadron and Condensed- Matter Systems”
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Color dipole 近似を使ったクォーク・グルーオン・プラズマ中でのクォーコニウムの時間発展の計算2022

    • Author(s)
      開田 有奏、赤松 幸尚、浅川 正之
    • Organizer
      日本物理学会 第 76 回年次大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Nonequilibrium evolution of quarkonium in medium2021

    • Author(s)
      Yukinao Akamatsu, Takahiro Miura
    • Organizer
      A Virtual Tribute to Quark Confinement and the Hadron Spectrum 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Dynamics of quarkonium as an open quantum system2021

    • Author(s)
      Yukinao Akamatsu
    • Organizer
      The 8th Asian Triangle Heavy-Ion Conference (ATHIC 2021)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 相対論的重イオン衝突におけるクォーコニウムのデコヒーレンスと量子散逸2021

    • Author(s)
      赤松 幸尚
    • Organizer
      日本物理学会 第76回年次大会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 相対論的重イオン衝突におけるクォーコニウムのデコヒーレンスと量子散逸2021

    • Author(s)
      赤松 幸尚
    • Organizer
      KEK 素核宇・物性 連携研究会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] カラー 1 重項・8 重項遷移を取り入れた重いクォーコニウムの量子散逸過程2020

    • Author(s)
      三浦 崇寛、赤松 幸尚
    • Organizer
      日本物理学会 2020年秋季大会
    • Related Report
      2020 Research-status Report
  • [Presentation] SU(3)確率ポテンシャル中でのクォーコニウムカラー八重項状態のふるまい2020

    • Author(s)
      梶本 詩織, 赤松 幸尚, 浅川 正之, Alexander Rothkopf
    • Organizer
      日本物理学会 第 75 回年次大会(2020年)
    • Related Report
      2019 Research-status Report
  • [Presentation] What can quarkonium tell us about the QGP?2019

    • Author(s)
      Yukinao Akamatsu
    • Organizer
      Quo vadis QCD theory: heavy-ion collision perspectives and beyond
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Approach to thermalization and hydrodynamics2019

    • Author(s)
      Yukinao Akamatsu
    • Organizer
      The 28th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter 2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Quarkonium as an open quantum system in the QGP2019

    • Author(s)
      赤松 幸尚
    • Organizer
      第36回Heavy-Ion Cafe
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] クォーコニウム2019

    • Author(s)
      赤松 幸尚
    • Organizer
      チュートリアル研究会「高エネルギー重イオン衝突の物理:基礎・最先端・課題・展望」
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Quantum dissipation of quarkonium in quark-gluon plasma: Lindblad equation approach2019

    • Author(s)
      Takahiro Miura, Yukinao Akamatsu, Masayuki Asakawa, Alexander Rothkopf
    • Organizer
      The 17th International Conference on QCD in Extreme Conditions (XQCD 2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Quarkonium dynamics with colorful stochastic potential2019

    • Author(s)
      Shiori Kajimoto, Yukinao Akamatsu, Masayuki Asakawa, Alexander Rothkopf
    • Organizer
      The 28th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter 2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Quantum dissipation in the quarkonium evolution by Lindblad master equation2019

    • Author(s)
      Takahiro Miura, Yukinao Akamatsu, Masayuki Asakawa, Alexander Rothkopf
    • Organizer
      The 28th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter 2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] SU(3)カラー自由度を取り入れたクォーコニウムの時間発展2019

    • Author(s)
      梶本 詩織, 赤松 幸尚, 浅川 正之, Alexander Rothkopf
    • Organizer
      日本物理学会 2019 年秋季大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Quantum Aspects of Quarkonium Dynamics2019

    • Author(s)
      Yukinao Akamatsu
    • Organizer
      Nagoya Mini-Workshop “Phenomenology and experiments at RHIC and the LHC”
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 重イオン衝突における QCD 臨界点探索に対する Kibble-Zurek scaling 解析2019

    • Author(s)
      赤松 幸尚, Derek Teaney, Fanglida Yan, Yi Yin
    • Organizer
      日本物理学会 第74回年次大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Quantum aspects of heavy quark theory2018

    • Author(s)
      Yukinao Akamatsu
    • Organizer
      The 7th Asian Triangle Heavy-Ion Conference
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Open Quantum Systems for Quarkonia in QGP2018

    • Author(s)
      Yukinao Akamatsu
    • Organizer
      INT Program INT-18-1b: Multi-Scale Problems Using Effective Field Theories
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Quantum Dissipation of Heavy Quarks in the Quark-Gluon Plasma2018

    • Author(s)
      Yukinao Akamatsu
    • Organizer
      New Frontiers in QCD 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Quantum dynamical dissociation of quarkonia by wave function decoherence in quark-gluon plasma2018

    • Author(s)
      Shiori Kajimoto, Yukinao Akamatsu, Masayuki Asakawa, Alexander Rothkopf
    • Organizer
      The 27th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions: Quark Matter 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] “Classicalization” of quarkonia in the quark-gluon plasma2018

    • Author(s)
      Shiori Kajimoto, Yukinao Akamatsu, Masayuki Asakawa, Alexander Rothkopf
    • Organizer
      The 27th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions: Quark Matter 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

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

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