研究課題/領域番号 |
20K14376
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研究種目 |
若手研究
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配分区分 | 基金 |
審査区分 |
小区分13010:数理物理および物性基礎関連
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研究機関 | 慶應義塾大学 |
研究代表者 |
エドモンズ マシュー 慶應義塾大学, 自然科学研究教育センター(日吉), 訪問研究員 (00865230)
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研究期間 (年度) |
2020-04-01 – 2024-03-31
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研究課題ステータス |
交付 (2022年度)
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配分額 *注記 |
2,990千円 (直接経費: 2,300千円、間接経費: 690千円)
2023年度: 650千円 (直接経費: 500千円、間接経費: 150千円)
2022年度: 520千円 (直接経費: 400千円、間接経費: 120千円)
2021年度: 650千円 (直接経費: 500千円、間接経費: 150千円)
2020年度: 1,170千円 (直接経費: 900千円、間接経費: 270千円)
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キーワード | BEC / ultracold atomic gases / vortices / gauge fields / ultracold atoms / Vortices / Bose-Einstein condensate / Superfluidity / Impurities / Atomtronics |
研究開始時の研究の概要 |
Fluids in everyday life are viscous - there is some resistance to their flow. However the world of atoms is quite different, as they can move without resistance - a property called superfluidity. This research aims to understand superfluids interacting with small numbers of extra impurity atoms.
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研究実績の概要 |
Quantum liquid-like states of matter have been realized in an ongoing series of experiments with ultracold Bose gases. By means of analytical and theoretical methods we identify the specific criteria for the existence of dark solitons in beyond-mean-field condensates, revealing how these excitations exist for both repulsive and attractive interactions, the latter leading to dark quantum droplets with properties intermediate between a dark soliton and a quantum droplet. The dark quantum droplet's physical characteristics are investigated, including calculation of the integrals of motion, revealing their sensitive dependence on physical parameters relevant to the current generation of experiments with quantum gases in the beyond-mean-field limit.
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現在までの達成度 (区分) |
現在までの達成度 (区分)
2: おおむね順調に進展している
理由
I have been able to publish two papers. One is Dark quantum droplets in beyond-mean-field Bose-Einstein condensate mixtures M Edmonds, arXiv preprint arXiv:2209.00790. This paper is accepted for publication in Phys. Rev. Research. The other is Quantum vacuum, rotation, and nonlinear fields, A Flachi, M Edmonds, Physical Review D 107 (2), 025008
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今後の研究の推進方策 |
I will develop our results to more general cases. In particular, for the first one in the above, there are many directions as discussed there.
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