Novel Superfluidity in Ultracold Atomic Gases in Optical Lattices
| Project/Area Number |
25400419
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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 |
Atomic/Molecular/Quantum electronics
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| Research Institution | Tokyo University of Science |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Keywords | 冷却原子気体 / 光格子 / 超流動 / Bose-Einstein凝縮 / 量子渦格子 / 集団励起 / 量子相転移 / スピン自由度 / 励起スペクトル |
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| Outline of Final Research Achievements |
We theoretically studied novel superfluid phenomena in ultracold atomic gases in optical lattices. For Bose gases, we investigated the effect of a potential barrier, and found the existence of Higgs bound state. We also studied tuning properties of Nambu-Goldstone mode, and found asymmetric resonance peak in a tunneling probability. We also studied ground-state properties and elementary excitations in spin-1 Bose gases.
For Fermi gases, we found nonuniform superfluid states in Kagame lattice, and emergence of a stable Higgs mode in Honeycomb lattice.
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Report
(4 results)
Research Products
(24 results)
