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Non-equilibrium field dynamics in QCD

Research Project

Project/Area Number 24540255
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 InstitutionThe University of Tokyo

Principal Investigator

FUJII Hirotsugu  東京大学, 総合文化研究科, 助教 (10313173)

Project Period (FY) 2012-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords量子色力学 / 超相対論的原子核衝突 / 有限温度密度 / 非平衡場の理論 / 符号問題 / ハドロン構造 / 高温高密度 / 高エネルギー原子核衝突 / 有限温度密度QCD / 高エネルギー重イオン衝突 / ゲージ場 / 非平衡の場の理論 / 動的臨界現象 / シミュレーション
Outline of Final Research Achievements

With recent developments in study of high-density medium and QCD phase diagram with ultra-relativistic nuclear collisions, we performed theoretical studies towards understanding non-equilibrium aspects of QCD medium.
We evaluate quantitatively the effects of the gluon saturation in the incident nucleus on particle production in proton-nucleus collisions. Regarding time evolution, we formulate the equation of motion in tau-eta coordinates based on 2-particle irreducible effective action framework. As for statistical sampling of the systems with complex actions, we examine the pros and cons of two approaches, the complex Langevin equation and the Lefschetz thimble method, by applying them to simple models.

Report

(5 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • 2012 Research-status Report
  • Research Products

    (27 results)

All 2016 2015 2014 2013 2012

All Journal Article (12 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 12 results,  Acknowledgement Compliant: 4 results,  Open Access: 2 results) Presentation (15 results) (of which Invited: 4 results)

  • [Journal Article] Leptons from heavy-quark semileptonic decay in p A collisions within the CGC framework2016

    • Author(s)
      H. Fujii, K. Watanabe
    • Journal Title

      Nuclear Physics A

      Volume: 951 Pages: 45-59

    • DOI

      10.1016/j.nuclphysa.2016.03.045

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Heavy-flavour and quarkonium production in the LHC era: from proton–proton to heavy-ion collisions2016

    • Author(s)
      A. Andronic et al.. (56 authors)
    • Journal Title

      European Physical Journal C

      Volume: 76 Issue: 3 Pages: 107-107

    • DOI

      10.1140/epjc/s10052-015-3819-5

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Monte Carlo study of Lefschetz thimble structure in one-dimensional Thirring model at finite density2015

    • Author(s)
      H. Fujii, S. Kamata, Y. Kikukawa
    • Journal Title

      Journal of High Energy Physics

      Volume: 1512 Issue: 12 Pages: 125-125

    • DOI

      10.1007/jhep12(2015)125

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Lefschetz thimble structure in one-dimensional lattice Thirring model at finite density2015

    • Author(s)
      H. Fujii, S. Kamata, Y. Kikukawa
    • Journal Title

      Journal of High Energy Physics

      Volume: 1511 Issue: 11 Pages: 078-078

    • DOI

      10.1007/jhep11(2015)078

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Forward Hadron Productions in high energy pp collisions from a Monte-Carlo generator for Color Glass Condensate2015

    • Author(s)
      W. Deng, H. Fujii, K. Itakura, Y. Nara
    • Journal Title

      Physical Review D

      Volume: 91 Issue: 1

    • DOI

      10.1103/physrevd.91.014006

    • Related Report
      2014 Research-status Report
    • Peer Reviewed
  • [Journal Article] Finite pulse effects on e+e- pair creation from strong electric fields2014

    • Author(s)
      H. Taya, H. Fujii, K. Itakura
    • Journal Title

      Physical Review D

      Volume: 90 Issue: 1

    • DOI

      10.1103/physrevd.90.014039

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Hybrid Monte Carlo on Lefschetz thimbles - A study of the residual sign problem2013

    • Author(s)
      藤井宏次、本田大悟、加藤光裕、菊川芳夫、小松尚太、佐野崇
    • Journal Title

      Journal of High Energy Physics

      Volume: 10 Issue: 10 Pages: 147-171

    • DOI

      10.1007/jhep10(2013)147

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Heavy quark pair production in high energy pA collisions: Open heavy flavors2013

    • Author(s)
      H. Fujii, K. Watanabe
    • Journal Title

      Nuclear Physics A

      Volume: 920 Pages: 78-93

    • DOI

      10.1016/j.nuclphysa.2013.10.006

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Heavy quark pair production in high energy pA collisions: Quarkonium2013

    • Author(s)
      H. Fujii, K. Watanabe
    • Journal Title

      Nuclear Physics A

      Volume: 915 Pages: 1-23

    • DOI

      10.1016/j.nuclphysa.2013.06.011

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Magnetic screening in high-energy heavy-ion collisions2013

    • Author(s)
      A. Dumitru, H. Fujii, Y. Nara
    • Journal Title

      Physical Review D

      Volume: 77 Issue: 3 Pages: 31503-31503

    • DOI

      10.1103/physrevd.88.031503

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] CGC predictions for p+Pb collisions at the LHC2013

    • Author(s)
      J.L.Albacete
    • Journal Title

      Nuclear Physics A

      Volume: 897 Pages: 1-27

    • DOI

      10.1016/j.nuclphysa.2012.09.012

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Forward particle production in proton-nucleus collisions at the LHC2013

    • Author(s)
      H. Fujii
    • Journal Title

      J.Phys.Conf.Ser.

      Volume: 422 Pages: 12027-12027

    • DOI

      10.1088/1742-6596/422/1/012027

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Presentation] Lefschetz thimble analysis of 1D Thirring model at finite density2016

    • Author(s)
      H. Fujii, S. Kamata, Y. Kikukawa
    • Organizer
      日本物理学会
    • Place of Presentation
      東北学院大学(泉キャンパス)(宮城県・仙台市)
    • Year and Date
      2016-03-19
    • Related Report
      2015 Annual Research Report
  • [Presentation] 符号問題に対する試み:複素ランジュバン法とLefschetz thimble2015

    • Author(s)
      藤井宏次
    • Organizer
      日本物理学会
    • Place of Presentation
      早稲田大学(東京)
    • Year and Date
      2015-03-24
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] Complex Langevin and Thimbles in Chiral Random Matrix Model2015

    • Author(s)
      藤井宏次
    • Organizer
      Hadrons and hadron interactions in QCD
    • Place of Presentation
      京都大学基礎物理学研究所(京都)
    • Year and Date
      2015-03-09
    • Related Report
      2014 Research-status Report
  • [Presentation] Heavy quark pair production and parton saturation in pA collisions at the LHC2014

    • Author(s)
      渡邊和宏
    • Organizer
      24th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions
    • Place of Presentation
      Darmstadt, Germany
    • Year and Date
      2014-05-19 – 2014-05-24
    • Related Report
      2014 Research-status Report
  • [Presentation] Heavy quarks from CGC in pA collisions2013

    • Author(s)
      H. Fujii
    • Organizer
      New Frontiers in QCD 2014
    • Place of Presentation
      京都大学基礎物理学研究所、京都府京都市左京区北白川追分町
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] CGC approach in p+A collisions2013

    • Author(s)
      H. Fujii
    • Organizer
      PHENIX Workshop on Physics Prospects with Detector and Accelerator Upgrades
    • Place of Presentation
      理化学研究所和光本所、埼玉県和光市広沢
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] Gluon saturation and heavy flavors in p+A collisions at the LHC2013

    • Author(s)
      H. Fujii
    • Organizer
      Workshop on high energy, high density and hot QCD
    • Place of Presentation
      ヨーロッパ理論物理センター(ECT*), Trento, Italy
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] 相対論的場の理論における散逸モードの微視的同定2013

    • Author(s)
      Y. Saito, O. Morimatsu, K. Itakura, H. FUjii
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      高知大学朝倉キャンパス、高知県高知市曙町
    • Related Report
      2013 Research-status Report
  • [Presentation] カラーグラス凝縮にもとづく高エネルギー原子核衝突直後のグルーオン生成2013

    • Author(s)
      Y. Nara, A. Dumitru, H. Fujii
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      高知大学朝倉キャンパス、高知県高知市曙町
    • Related Report
      2013 Research-status Report
  • [Presentation] カラーグラス凝縮に基づくpA衝突におけるクォークニウム生成2013

    • Author(s)
      K. Watanabe, H. Fujii
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      高知大学朝倉キャンパス、高知県高知市曙町
    • Related Report
      2013 Research-status Report
  • [Presentation] カラーグラス凝縮に基づくpA衝突における重クォーク対相関2013

    • Author(s)
      渡邉和宏,藤井宏次
    • Organizer
      日本物理学会2013年年次大会
    • Place of Presentation
      広島大学(東広島市)
    • Related Report
      2012 Research-status Report
  • [Presentation] 複素ランジュバン法適用条件のランダム行列模型による解析2013

    • Author(s)
      佐野崇、藤井宏次、菊川芳夫
    • Organizer
      日本物理学会2013年年次大会
    • Place of Presentation
      広島大学(東広島市)
    • Related Report
      2012 Research-status Report
  • [Presentation] Color Glass Condensate Approach to p+Pb Collisions at the LHC2012

    • Author(s)
      H. Fujii
    • Organizer
      International symposium on multiparticle dynamics
    • Place of Presentation
      Jan Kochanowski University (Kielce, Poland)
    • Related Report
      2012 Research-status Report
  • [Presentation] pA衝突での重いクォーク対生成:rcBK方程式が記述するパートン飽和効果2012

    • Author(s)
      渡邉和宏,藤井宏次
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      京都産業大学(京都市)
    • Related Report
      2012 Research-status Report
  • [Presentation] 2PI有効作用を用いた動的臨界現象の微視的記述に向けて2012

    • Author(s)
      斎藤陽平,森松治,板倉数記,藤井宏次
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      京都産業大学(京都市)
    • Related Report
      2012 Research-status Report

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Published: 2013-05-31   Modified: 2019-07-29  

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