3-Dimensional Simulation of Quantum Vortex in a Bose-Einstein Condensate
| Project/Area Number |
16540355
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Mathematical physics/Fundamental condensed matter physics
|
|---|
| Research Institution | Japan Atomic Energy Agency |
|---|
Principal Investigator |
SASA Narimasa Japan Atomic Energy Agency, Center for Computational Science and e-System, Researcher, トステム計算科学センター, 研究員 (10360421)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
MACHIDA Masahiko Japan Atomic Energy Agency, Center for Computational Science and e-System, Senior Researcher, トステム計算科学センター, 研究主幹 (60360434)
TSUBOTA Makoto Osaka City University, Graduate School of Science, Professor, 大学院・理学研究科, 教授 (10197759)
|
|---|
| Project Period (FY) |
2004 – 2005
|
| Project Status |
Completed (Fiscal Year 2005)
|
| Budget Amount *help |
¥3,700,000 (Direct Cost: ¥3,700,000)
Fiscal Year 2005: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 2004: ¥2,200,000 (Direct Cost: ¥2,200,000)
|
|---|
| Keywords | atomic, molecular physics / condensed matter physics / computational physics / 希薄原子気体 / ボーズ-アインシュタイン凝縮 / 量子渦系 / 渦糸乱流 / 液体ヘリウム / 超伝導 / 量子渦糸 / 液体ヘリゥム / コルモゴロフ則 |
|---|
| Research Abstract |
1.We directly integrate the 3-D time-dependent Gross-Pitaevskii equation in order to examine how Bose-Einstein condensate (BEC) dynamically changes by a trigger of the rotation. We present unexplored 3-D non-steady dynamics including the surface ripples preceding vortex initiations, the vortex turbulent state and the vortex lattice state.
2.In order to clarify the structure of a single quantized vortex in a superfluid fermion gas near the Feshbach resonance, we numerically solve the generalized Bogoliubov-de Gennes equation in the boson-fermion model. We present detailed properties of single vortex in a superfluid fermion gas.
3.The energy spectrum of superfluid turbulence is studied numerically by solving the Gross-Pitaevskii equation. The obtained energy spectrum is consistent with the Kolmogorov low.
|
Report
(3 results)
Research Products
(50 results)
