2015 Fiscal Year Final Research Report
Non-equilibrium field dynamics in QCD
| Project/Area Number |
24540255
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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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 | The University of Tokyo |
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Principal Investigator |
|
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| Project Period (FY) |
2012-04-01 – 2016-03-31
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| Keywords | 量子色力学 / 超相対論的原子核衝突 / 有限温度密度 / 非平衡場の理論 / 符号問題 / ハドロン構造 |
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| Outline of Final Research Achievements |
With recent developments in study of high-density medium and QCD phase diagram with ultra-relativistic nuclear collisions, we performed theoretical studies towards understanding non-equilibrium aspects of QCD medium.
We evaluate quantitatively the effects of the gluon saturation in the incident nucleus on particle production in proton-nucleus collisions. Regarding time evolution, we formulate the equation of motion in tau-eta coordinates based on 2-particle irreducible effective action framework. As for statistical sampling of the systems with complex actions, we examine the pros and cons of two approaches, the complex Langevin equation and the Lefschetz thimble method, by applying them to simple models.
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| Free Research Field |
原子核理論
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