Quantum engines with interacting Bose-Einstein condensates
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866914797534052352 |
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| author | Estrada, Julian Amette Mayo, Franco Roncaglia, Augusto J. Mininni, Pablo D. |
| author_facet | Estrada, Julian Amette Mayo, Franco Roncaglia, Augusto J. Mininni, Pablo D. |
| contents | We consider a quantum Otto cycle with an interacting Bose-Einstein condensate at finite temperature. We present a procedure to evolve this system in time in three spatial dimensions, in which closed (adiabatic) strokes are described by the Gross-Pitaevskii equation, and open (isochoric) strokes are modeled using a stochastic Ginzburg-Landau equation. We analyze the effect on the thermodynamic efficiency of the strength of interactions, the frequency of the harmonic trap, and the temperatures of the reservoirs. The efficiency has little sensitivity to changes in the temperatures, but decreases as interactions increase. However, stronger interactions allow for faster cycles and for substantial increases in power. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2308_12205 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Quantum engines with interacting Bose-Einstein condensates Estrada, Julian Amette Mayo, Franco Roncaglia, Augusto J. Mininni, Pablo D. Quantum Physics We consider a quantum Otto cycle with an interacting Bose-Einstein condensate at finite temperature. We present a procedure to evolve this system in time in three spatial dimensions, in which closed (adiabatic) strokes are described by the Gross-Pitaevskii equation, and open (isochoric) strokes are modeled using a stochastic Ginzburg-Landau equation. We analyze the effect on the thermodynamic efficiency of the strength of interactions, the frequency of the harmonic trap, and the temperatures of the reservoirs. The efficiency has little sensitivity to changes in the temperatures, but decreases as interactions increase. However, stronger interactions allow for faster cycles and for substantial increases in power. |
| title | Quantum engines with interacting Bose-Einstein condensates |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2308.12205 |