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2002 Fiscal Year Final Research Report Summary

Study of microscopic and macroscopic QGP phenomenon

Research Project

Project/Area Number 11440080
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 素粒子・核・宇宙線
Research InstitutionHIROSHIMA UNIVERSITY

Principal Investigator

NAKAMURA Atsushi  Hiroshima University, Information Media Center, Professor, 情報メディア教育研究センター, 教授 (30130876)

Co-Investigator(Kenkyū-buntansha) MUROYA Shinn  Tokuyama Women's College, Assoc. Professor, 助教授 (70239557)
HONNMA Kennsuke  Hiroshima University, Graduate School of Science, Assistant, 大学院・理学研究科, 助手 (40304399)
INAGAKI Tomohiro  Hiroshima University, Information Media Center, Lecturer, 情報メディア教育研究センター, 講師 (80301307)
Project Period (FY) 1999 – 2002
Keywordsquark / hadron / quark-gluon-plasma / confinement / QCD
Research Abstract

At very high temperature or density such as the very early second of the universe and neutron stars, the confinement is expected to be broken, and QGP (quark-gluon plasma) state may be realized. Now high energy nuclear collision experiments are actively done to find the QGP.
At low density and high temperature we have developed a formula to calculate derivatives of hadron masses etc. with respect to the chemical potential and observed the finite signals. We also studied SU(2) QCD and found the drop of the vector meson for the first time in lattice QCD calculations.
In order to understand the phase structure of gauge theories in a non-perturbative manner, we have treated the longitudinal and transverse cornponents of gauge fields carefully with Schwinger-Dyson equation, and analyzed the phase structure in details.
We studied also higher dimensional effects on low energy effective electro-weak theory in Randall-Sundrum space-time. We started RHIC experiment to search for QGP. We have observed large anisotropic flow, Jet quenching, the suppression of high transverse pion production and strong rapidity correlation in locally conserved quantities.
We have developed a real 3+1 dimension relativistic fluid dynamics code, and together with an event-generator of nuclear reaction which describe the early stage of the collisions, we studied the unisotropic expansion of non-central collision under the realistic initial condition.

  • Research Products

    (5 results)

All Other

All Publications (5 results)

  • [Publications] S.Muroya, A.Nakamura, C.Nonaka: "Behavior of Hadrons at Finite Density"Physics Letters. B551. 305-310 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Nakamura, I.Pushkina, T.Saito, S.Sakai: "Screening of hot gluon"Physics Letters. B549. 133-138 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Adcox, K.Homma他: "MEASUREMENT OF THE LAMBDA AND ANTI-LAMBDA PARTICLES IN AU+AU COLLISIONS AT S(NN)^<**>(1/2) = 130-GEV"Physical Review Letters. 89. 092302 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Abe, T.Inagaki: "Schwinger-Dyson Analysis of Dynamical Symmetry Breaking on a Brane with Bulk Yang-Mills Theory"Physical Review. D66. 085001 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Morita, S.Muroya, C.Nonaka, T.Hirano: "Comparison of space-time evolutions of hot/dense matter in sqrt{s_{NN}}=17 and 130 GeV relativistic heavy ion collisions based on a hydrodynamical model"Physical Review. C66. 054904 (2002)

    • Description
      「研究成果報告書概要(和文)」より

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Published: 2004-04-14  

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