| Project/Area Number |
26220707
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| Research Category |
Grant-in-Aid for Scientific Research (S)
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| Allocation Type | Single-year Grants |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Hiroshima University |
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Principal Investigator |
Sugitate Toru 広島大学, 理学研究科, 教授 (80144806)
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| Co-Investigator(Kenkyū-buntansha) |
濱垣 秀樹 長崎総合科学大学, 新技術創成研究所, 特命教授 (90114610)
中條 達也 筑波大学, 数理物質系, 講師 (70418622)
三好 隆博 広島大学, 理学研究科, 助教 (60335700)
野中 千穂 名古屋大学, 基礎理論研究センター, 准教授 (10432238)
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| Research Collaborator |
Kunihiro Teiji
Miake Yasuo
Shigaki Kenta
Gunji Taku
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| Project Period (FY) |
2014-05-30 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥183,560,000 (Direct Cost: ¥141,200,000、Indirect Cost: ¥42,360,000)
Fiscal Year 2018: ¥27,690,000 (Direct Cost: ¥21,300,000、Indirect Cost: ¥6,390,000)
Fiscal Year 2017: ¥31,200,000 (Direct Cost: ¥24,000,000、Indirect Cost: ¥7,200,000)
Fiscal Year 2016: ¥31,850,000 (Direct Cost: ¥24,500,000、Indirect Cost: ¥7,350,000)
Fiscal Year 2015: ¥40,430,000 (Direct Cost: ¥31,100,000、Indirect Cost: ¥9,330,000)
Fiscal Year 2014: ¥52,390,000 (Direct Cost: ¥40,300,000、Indirect Cost: ¥12,090,000)
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| Keywords | クォーク物質 / フォトン物理 / ALICE実験 / クォークグルーオンプラズマ / QGP |
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| Outline of Final Research Achievements |
We have carried out our photon and jet physics with the photon spectrometer, PHOS, and the di-jet calorimeter, DCAL, in the ALICE experiment at CERN-LHC, to reveal nature of hot and dense quark matter created in heavy-ion collisions at the highest energy of RUN-2. We have investigated that the matter has been heated up to 3.4 trillion degree Celsius, which is far beyond the Hagedorn limit of hadronic matter, in Pb+Pb central collisions at sqrt(sNN) = 2.8 TeV/A. We have also studied the di-jet production and elliptic flow features, comparing with pp and p+Pb data and with hydro-dynamical model predictions. The models explain the features in general, however, we are looking at quite interesting new phenomena, which could be originated from its initial stage of collisions. Our challenge probing the initial stage with photons is underway.
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| Academic Significance and Societal Importance of the Research Achievements |
高温クォーク多体系の探求は非摂動的量子色力学（QCD）の振る舞いを理解するに留まらず、極低温に冷却した原子/分子のボーズ凝縮状態、超伝導/超流動量子臨界相転移現象、あるいは極低温原子の光学格子生成や量子もつれといった最先端科学との関連性を映しだす。自発的に対称性の破れた量子場という自然科学の核心的概念がこれらを結び付ける。この深遠な相互関係の理解を目指し、理論研究者と最新解析結果について相互理解を深めながら普遍的な拡がりをもった新たな学術領域「強く相互作用する量子多体系」の開拓に挑戦する。
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| Assessment Rating |
Result (Rating)
A: Progress in the research is steadily towards the initial goal. Expected research results are expected.
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