| Project/Area Number |
25400269
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
|
|---|
| Research Institution | Sophia University |
|---|
Principal Investigator |
|
|---|
| Co-Investigator(Renkei-kenkyūsha) |
NARA Yasushi 国際教養大学, 国際教養学部, 教授 (70453008)
|
|---|
| Research Collaborator |
MURASE Koichi
TACHIBANA Yasuki
|
|---|
| Project Period (FY) |
2013-04-01 – 2016-03-31
|
| Project Status |
Completed (Fiscal Year 2015)
|
| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
|
|---|
| Keywords | クォーク・グルーオン・プラズマ / 相対論的流体力学 / 流体揺らぎ / 高エネルギー原子核衝突反応 / 揺らぎの定理 / 相対論的重イオン衝突反応 / 揺らぎ / 高エネルギー原子核衝突 |
|---|
| Outline of Final Research Achievements |
The quark gluon plasma (QGP) existed 10 micro seconds after the Big Bang. The QGP can be also created in high-energy nuclear collision experiments. So far, it has turned out that the QGP behaves like a perfect fluid and its evolution is well described by relativistic hydrodynamics.
In this study, focused on fluctuations in the QGP. We first formulated relativistic fluctuating hydrodynamics and implemented it in the numerical code to investigate effects of the hydrodynamic fluctuations on observables. We found hydrodynamic fluctuations reduces correlation of the event plane angle between forward rapidity and central rapidity. We also found hydrodynamic fluctuations can decrease entropy of the system. This can be quantified from the fluctuation theorem.
We also studied how the QGP responses to jet propagation. Experimentally low momentum particles are observed away from the jet axis. This can be interpreted by formation and propagation of shock wave, Mach cone, in the QGP.
|
