2015 Fiscal Year Final Research Report
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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| Keywords | 冷却原子気体 / 光格子 / 超流動 |
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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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| Free Research Field |
原子・分子・量子エレクトロニクス
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