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An efficient nonlinear Feshbach engine
https://oist.repo.nii.ac.jp/records/653
https://oist.repo.nii.ac.jp/records/6537c56c1c5-58c1-4a2b-860c-ccbea0795a0c
名前 / ファイル | ライセンス | アクション |
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2018-1-9 Li_2018_New_J._Phys._20_015005-2 An e (4.4 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2018-08-14 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | An efficient nonlinear Feshbach engine | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者(英) |
Li, Jing
× Li, Jing× Fogarty, Thomás× Campbell, Steve× Chen, Xi× Busch, Thomas |
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書誌情報 |
en : New Journal of Physics 巻 20, 号 1, p. 015005, 発行日 2018-01-09 |
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抄録 | ||||||
内容記述タイプ | Other | |||||
内容記述 | We investigate a thermodynamic cycle using a Bose–Einstein condensate (BEC) with nonlinear interactions as the working medium. Exploiting Feshbach resonances to change the interaction strength of the BEC allows us to produce work by expanding and compressing the gas. To ensure a large power output from this engine these strokes must be performed on a short timescale, however such non-adiabatic strokes can create irreversible work which degrades the engine's efficiency. To combat this, we design a shortcut to adiabaticity which can achieve an adiabatic-like evolution within a finite time, therefore significantly reducing the out-of-equilibrium excitations in the BEC. We investigate the effect of the shortcut to adiabaticity on the efficiency and power output of the engine and show that the tunable nonlinearity strength, modulated by Feshbach resonances, serves as a useful tool to enhance the system's performance. | |||||
出版者 | ||||||
出版者 | IOP Publishing Ltd on behalf of Deutsche Physikalische Gesellschaft | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1367-2630 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1088/1367-2630/aa9cd8 | |||||
権利 | ||||||
権利情報 | © 2018 The Author(s). | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://iopscience.iop.org/article/10.1088/1367-2630/aa9cd8/meta | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |