Study of strongly-correlated quark-gluon plasma via center vortex mechanism

• Project/Area Number: 23740194
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Kochi University
• Principal Investigator: Saito Takuya 高知大学, 自然科学系, 助教 (50448023)
• Project Period (FY): 2011-04-28 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: クォークグルーオンプラズマ / 格子量子色力学 / クォーク閉じ込め / 磁場遮蔽 / 閉じ込め問題 / センターボーテックス / 格子ゲージ理論 / 輸送係数 / 有限密度量子色力学 / center vortex / quark gluon plasma / quark confinement / quantum chromodynamics / toplogy on the lattice / 国際情報交流 / 多国籍 / 物理学

Outline of Final Research Achievements

We study the role of magnetic degree of freedom in the gluon plasma after the phase transition via center vortex mechanism by using the SU(2) lattice simulations.In the infrared region the magnetic gluon propagator is strongly affected by removal of the center vortices; this means that thermal magnetic gluons are still nonperturbative objects in the deconfinement phase. The equation of state is also investigated by the lattice configuration under this procedure and the free energy become so large. In addition, the thermal correlator function of transport coefficient to shear viscosity is found to be dependent on center vortices.

Research Products

• [Journal Article] Phase structure of two-color QCD at real and imaginary chemical potentials; lattice simulations and model analyses (2016)
  • Author(s): Takahiro Makiyama (Saga U., Japan), Yuji Sakai (Wako, RIKEN), Takuya Saito (Kochi U.), Masahiro Ishii, Junichi Takahashi (Kyushu U.), Kouji Kashiwa (Kyoto U., Yukawa Inst., Kyoto), Hiroaki Kouno (Saga U., Japan), Atsushi Nakamura (Hiroshima U., RIISE), Masanobu Yahiro (Kyushu U.)
  • Journal Title: Phys. Rev. D Volume: 93 Issue: 1 Pages: 014505-014505
  • DOI: 10.1103/physrevd.93.014505
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Color screening potential at finite density in two-flavor lattice QCD with Wilson fermion (2013)
  • Author(s): Junichi Takahashi, Keitaro Nagata, Takuya Saito, Atsushi Nakamura, Takahiro Sasaki, Hiroaki Kouno, and Masanobu Yahiro
  • Journal Title: Physical Review D Volume: 88 Issue: 11
  • DOI: 10.1103/physrevd.88.114504
  • Peer Reviewed
• [Journal Article] Heavy quark potential at finite imaginary chemical potential (2013)
  • Author(s): J. Takahashi, T. Sasaki, M. Yahiro, K. Nagata, T. Saito, H. Kouno, A. Nakamura
  • Journal Title: Proceedings of Science Volume: Lattice 2013
  • Peer Reviewed
• [Journal Article] Lattice study of the gluon plasma via center vortex mechanism (2013)
  • Author(s): Takuya Saito
  • Journal Title: Proceedings of Science Volume: Confinement X
  • Peer Reviewed
• [Journal Article] Towards extremely dense matter on the lattice, XQCD-J Collaboration (2012)
  • Author(s): A.Nakamura et al.
  • Journal Title: PTEP 2012 Volume: 2012 Issue: 1 Pages: 1-35
  • DOI: 10.1093/ptep/pts003
  • Peer Reviewed
• [Journal Article] Gluon propagators and center vortices in gluon plasma (2011)
  • Author(s): M.N.Chernodub, Y.Nakagawa, A.Nakamura, T.Saito, V.I.Zakharov
  • Journal Title: Phys.Rev. Volume: D83 Issue: 11 Pages: 114501-114501
  • DOI: 10.1103/physrevd.83.114501
  • NAID: 120003644427
  • Peer Reviewed
• [Journal Article] Scaling study of the gluon propagator in Coulomb gauge QCD on isotropic and anisotropic lattices (2011)
  • Author(s): Y.Nakagawa, A.Nakamura, T.Saito, and H. Toki
  • Journal Title: Physical Review D Volume: 83
  • NAID: 120003644425
  • Peer Reviewed
• [Journal Article] The center magnetic vortex adn its influence on physical quantities in the gluon plasma (2011)
  • Author(s): Takuya Saito
  • Journal Title: Proceedings of Science Volume: Lattice 2011
  • Peer Reviewed
• [Presentation] センターボルテックスによるグルーオンプラズマの格子研究 (2013)
  • Author(s): 斎藤卓也
  • Organizer: 日本物理学会第68回年次大会
  • Place of Presentation: 広島大学
• [Presentation] Lattice study of the gluon plasma via center vortex mechanism (2012)
  • Author(s): Takuya Saito
  • Organizer: Xth Quark Confinement and the Hadron Spectrum
  • Place of Presentation: TUM Campus Garching, Munich, Germany
• [Presentation] The center magnetic vortex and its influence on physical quantities in the gluon plasma (2011)
  • Author(s): Takuya Saito
  • Organizer: The XXIX International Symposium on Lattice Field Theory
  • Place of Presentation: Squaw Valley, Lake Tahoe, California