2013 Fiscal Year Final Research Report
Study of QCD at finite temperature and finite density on the lattice with physical quark masses
| Project/Area Number |
21340049
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | University of Tsukuba |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
AOKI Sinya 京都大学, 基礎物理学研究所, 教授 (30192454)
HATSUDA Tetsuo 理化学研究所, 仁科加速器研究センター, 主任研究員 (20192700)
UKAWA Akira 筑波大学, 数理物質系, 副学長/教授 (10143538)
NAKAMURA Atsushi 広島大学, 情報メディア教育研究センター, 教授 (30130876)
EJIRI Shinji 新潟大学, 自然科学系, 准教授 (10401176)
UMEDA Takashi 広島大学, 大学院・教育学研究科, 准教授 (40451679)
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| Project Period (FY) |
2009-04-01 – 2014-03-31
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| Keywords | 素粒子論 / 量子色力学 / クォーク・グルオン・プラズマ / 計算物理学 / 有限温度 / 有限密度 / 格子場の理論 / 臨界点 |
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| Research Abstract |
By numerical simulations of lattice QCD with Wilson-type lattice quarks, we studied the phase structure of QCD at finite temperatures and densities as well as thermodynamic properties of the quark matter. Wilson-type lattice quarks are theoretically sound, but require large computational costs. Therefore, we have developed several computational techniques including the fixed-scale approach armed by the T-integration method and the histogram method, and tested their efficiency. Applying these techniques, we have computed the equation of state in two and 2+1 flavor QCD, for the first time with Wilson-type quarks. We have also investigated the inter-quark potential of static quarks and the phase structure of QCD at finite temperatures and densities in the heavy-quark region.
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