Theory of Superfluidity in inhomogeneous Bose systems
| Project/Area Number |
21540352
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Condensed matter physics II
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| Research Institution | The University of Tokyo |
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Principal Investigator |
KATO Yusuke 東京大学, 大学院・総合文化研究科, 准教授 (20261547)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2009: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 超低温 / 量子凝縮系 / 超固体 / ジョゼフソン効果 / 障害物ポテンシャル / 非古典的回転慣性 / 永久流 / グロス・ピタエフスキー方程式 / ボゴリューボフ方程式 / ポモー・リカ模型 / 固体超流動 / 臨界速度 / ソリトン / サドルノード分岐 / スケーリング則 / 相転移 / 超流動 / 固体 / ボース凝縮 / グロスピクエフスキー方程式 / スペクトル関数 |
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| Research Abstract |
Superfluidity, which implies macroscopic flow without dissipation, is realized in quantum liquids with Bose-Einstein condensates. Supersolids, on the other hand, are quantum solids with superfluid property. While earlier studies have concluded that supersolidity is impossible in the presence of an obstacle, we have given a counter-example in the present research project. We have demonstrated that quantum solids can maintain supersolidity in the presence of obstacles through the Josephson effect.
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Report
(4 results)
Research Products
(68 results)
