2013 Fiscal Year Final Research Report
Systematic Study of nonequilibrium dynamics in phase transitions of Quark-hadron matter
| Project/Area Number |
23340067
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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 | Kyoto University |
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Principal Investigator |
KUNIHIRO Teiji 京都大学, 理学(系)研究科(研究院), 教授 (20153314)
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| Co-Investigator(Kenkyū-buntansha) |
OHNISHI Akira 京都大学, 基礎物理学研究所, 教授 (70250412)
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| Co-Investigator(Renkei-kenkyūsha) |
HIDAKA Yoshimasa 独立法人理化学研究所, その他部局等, 研究員 (00425604)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Keywords | クォーク・グルーオンプラズマ / 熱化 / グラズマ / カオス / リャプーノフ指数 |
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| Research Abstract |
We have succeeded in numerically solving the classical Yang-Mills equations with the realistic initial conditions called Glasma. Computing the Kolmogorov-Sinaii entropy, we have shown that entropy is created even in the classical field dynamics. It is found that small but finite initial fluctuations of the gauge field are indispensable for the entropy creation,
We have also identified the coherent state as the corresponding quantum state for the classical fields, and obtained the time evolution of the coherent state through the classical Yang-Mills dynamics. We have calculated the entropy from the multiplicities of the particle derived from thus obtained choherent state, and found that entropy is created once small but finite fluctuations of the initial state is taken into account.
We have shown that if the hydrodynamics should be the infrared dynamics around thermal equilibrium, the first-order relativistic hydrodynamics must be the one by Landau and Lifshitz.
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[Presentation] 有限温度摂動論2012
Author(s)
日高義将
Organizer
基礎物理学研究所研究会「熱場の量子論」
Place of Presentation
京都大学基礎物理学研究所
Year and Date
2012-08-22
Invited
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