Zero-Temperature Properties of a Strongly Interacting Superfluid Fermi Gas in the BCS–BEC Crossover Region
Abstract We investigate thermodynamic properties and effects of quantum fluctuations in the Bardeen–Cooper–Schrieffer (BCS)–Bose–Einstein condensation (BEC) crossover region of a superfluid Fermi gas in the low-temperature limit. Including strong-coupling corrections within the framework of an exten...
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| Autor*in: |
Tajima, H. [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2016 |
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| Schlagwörter: |
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| Anmerkung: |
© Springer Science+Business Media New York 2016 |
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| Übergeordnetes Werk: |
Enthalten in: Journal of low temperature physics - Springer US, 1969, 187(2016), 5-6 vom: 03. Nov., Seite 677-684 |
|---|---|
| Übergeordnetes Werk: |
volume:187 ; year:2016 ; number:5-6 ; day:03 ; month:11 ; pages:677-684 |
| Links: |
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| DOI / URN: |
10.1007/s10909-016-1691-9 |
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OLC2036828841 |
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| 520 | |a Abstract We investigate thermodynamic properties and effects of quantum fluctuations in the Bardeen–Cooper–Schrieffer (BCS)–Bose–Einstein condensation (BEC) crossover region of a superfluid Fermi gas in the low-temperature limit. Including strong-coupling corrections within the framework of an extended T-matrix approximation, we numerically compute the isothermal compressibility $$\chi _n$$. While quantum fluctuation effects on $$\chi _n$$ in the strong-coupling BEC regime are explained by the quantum depletion due to a repulsive interaction between tightly bound molecules, effects of self-energy shift on the Fermi chemical potential are found to enhance $$\chi _n$$ in the weak-coupling BCS region. We also show that the calculated $$\chi _n$$ agrees well with the recent experiment on a $$^6$$Li Fermi gas done from the weak-coupling region to the unitarity limit. Our result would be useful for the study of many-body quantum corrections in the BCS–BEC crossover region of a strongly interacting Fermi superfluid. | ||
| 650 | 4 | |a Ultracold Fermi gas | |
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| 700 | 1 | |a Horikoshi, M. |4 aut | |
| 700 | 1 | |a Ohashi, Y. |4 aut | |
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10.1007/s10909-016-1691-9 doi (DE-627)OLC2036828841 (DE-He213)s10909-016-1691-9-p DE-627 ger DE-627 rakwb eng 530 VZ Tajima, H. verfasserin aut Zero-Temperature Properties of a Strongly Interacting Superfluid Fermi Gas in the BCS–BEC Crossover Region 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media New York 2016 Abstract We investigate thermodynamic properties and effects of quantum fluctuations in the Bardeen–Cooper–Schrieffer (BCS)–Bose–Einstein condensation (BEC) crossover region of a superfluid Fermi gas in the low-temperature limit. Including strong-coupling corrections within the framework of an extended T-matrix approximation, we numerically compute the isothermal compressibility $$\chi _n$$. While quantum fluctuation effects on $$\chi _n$$ in the strong-coupling BEC regime are explained by the quantum depletion due to a repulsive interaction between tightly bound molecules, effects of self-energy shift on the Fermi chemical potential are found to enhance $$\chi _n$$ in the weak-coupling BCS region. We also show that the calculated $$\chi _n$$ agrees well with the recent experiment on a $$^6$$Li Fermi gas done from the weak-coupling region to the unitarity limit. Our result would be useful for the study of many-body quantum corrections in the BCS–BEC crossover region of a strongly interacting Fermi superfluid. Ultracold Fermi gas BCS–BEC crossover Quantum fluctuations van Wyk, P. aut Hanai, R. aut Kagamihara, D. aut Inotani, D. aut Horikoshi, M. aut Ohashi, Y. aut Enthalten in Journal of low temperature physics Springer US, 1969 187(2016), 5-6 vom: 03. Nov., Seite 677-684 (DE-627)129546267 (DE-600)218311-0 (DE-576)014996642 0022-2291 nnns volume:187 year:2016 number:5-6 day:03 month:11 pages:677-684 https://doi.org/10.1007/s10909-016-1691-9 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_22 GBV_ILN_70 GBV_ILN_170 GBV_ILN_4126 GBV_ILN_4323 AR 187 2016 5-6 03 11 677-684 |
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10.1007/s10909-016-1691-9 doi (DE-627)OLC2036828841 (DE-He213)s10909-016-1691-9-p DE-627 ger DE-627 rakwb eng 530 VZ Tajima, H. verfasserin aut Zero-Temperature Properties of a Strongly Interacting Superfluid Fermi Gas in the BCS–BEC Crossover Region 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media New York 2016 Abstract We investigate thermodynamic properties and effects of quantum fluctuations in the Bardeen–Cooper–Schrieffer (BCS)–Bose–Einstein condensation (BEC) crossover region of a superfluid Fermi gas in the low-temperature limit. Including strong-coupling corrections within the framework of an extended T-matrix approximation, we numerically compute the isothermal compressibility $$\chi _n$$. While quantum fluctuation effects on $$\chi _n$$ in the strong-coupling BEC regime are explained by the quantum depletion due to a repulsive interaction between tightly bound molecules, effects of self-energy shift on the Fermi chemical potential are found to enhance $$\chi _n$$ in the weak-coupling BCS region. We also show that the calculated $$\chi _n$$ agrees well with the recent experiment on a $$^6$$Li Fermi gas done from the weak-coupling region to the unitarity limit. Our result would be useful for the study of many-body quantum corrections in the BCS–BEC crossover region of a strongly interacting Fermi superfluid. Ultracold Fermi gas BCS–BEC crossover Quantum fluctuations van Wyk, P. aut Hanai, R. aut Kagamihara, D. aut Inotani, D. aut Horikoshi, M. aut Ohashi, Y. aut Enthalten in Journal of low temperature physics Springer US, 1969 187(2016), 5-6 vom: 03. Nov., Seite 677-684 (DE-627)129546267 (DE-600)218311-0 (DE-576)014996642 0022-2291 nnns volume:187 year:2016 number:5-6 day:03 month:11 pages:677-684 https://doi.org/10.1007/s10909-016-1691-9 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_22 GBV_ILN_70 GBV_ILN_170 GBV_ILN_4126 GBV_ILN_4323 AR 187 2016 5-6 03 11 677-684 |
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10.1007/s10909-016-1691-9 doi (DE-627)OLC2036828841 (DE-He213)s10909-016-1691-9-p DE-627 ger DE-627 rakwb eng 530 VZ Tajima, H. verfasserin aut Zero-Temperature Properties of a Strongly Interacting Superfluid Fermi Gas in the BCS–BEC Crossover Region 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media New York 2016 Abstract We investigate thermodynamic properties and effects of quantum fluctuations in the Bardeen–Cooper–Schrieffer (BCS)–Bose–Einstein condensation (BEC) crossover region of a superfluid Fermi gas in the low-temperature limit. Including strong-coupling corrections within the framework of an extended T-matrix approximation, we numerically compute the isothermal compressibility $$\chi _n$$. While quantum fluctuation effects on $$\chi _n$$ in the strong-coupling BEC regime are explained by the quantum depletion due to a repulsive interaction between tightly bound molecules, effects of self-energy shift on the Fermi chemical potential are found to enhance $$\chi _n$$ in the weak-coupling BCS region. We also show that the calculated $$\chi _n$$ agrees well with the recent experiment on a $$^6$$Li Fermi gas done from the weak-coupling region to the unitarity limit. Our result would be useful for the study of many-body quantum corrections in the BCS–BEC crossover region of a strongly interacting Fermi superfluid. Ultracold Fermi gas BCS–BEC crossover Quantum fluctuations van Wyk, P. aut Hanai, R. aut Kagamihara, D. aut Inotani, D. aut Horikoshi, M. aut Ohashi, Y. aut Enthalten in Journal of low temperature physics Springer US, 1969 187(2016), 5-6 vom: 03. Nov., Seite 677-684 (DE-627)129546267 (DE-600)218311-0 (DE-576)014996642 0022-2291 nnns volume:187 year:2016 number:5-6 day:03 month:11 pages:677-684 https://doi.org/10.1007/s10909-016-1691-9 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_22 GBV_ILN_70 GBV_ILN_170 GBV_ILN_4126 GBV_ILN_4323 AR 187 2016 5-6 03 11 677-684 |
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10.1007/s10909-016-1691-9 doi (DE-627)OLC2036828841 (DE-He213)s10909-016-1691-9-p DE-627 ger DE-627 rakwb eng 530 VZ Tajima, H. verfasserin aut Zero-Temperature Properties of a Strongly Interacting Superfluid Fermi Gas in the BCS–BEC Crossover Region 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media New York 2016 Abstract We investigate thermodynamic properties and effects of quantum fluctuations in the Bardeen–Cooper–Schrieffer (BCS)–Bose–Einstein condensation (BEC) crossover region of a superfluid Fermi gas in the low-temperature limit. Including strong-coupling corrections within the framework of an extended T-matrix approximation, we numerically compute the isothermal compressibility $$\chi _n$$. While quantum fluctuation effects on $$\chi _n$$ in the strong-coupling BEC regime are explained by the quantum depletion due to a repulsive interaction between tightly bound molecules, effects of self-energy shift on the Fermi chemical potential are found to enhance $$\chi _n$$ in the weak-coupling BCS region. We also show that the calculated $$\chi _n$$ agrees well with the recent experiment on a $$^6$$Li Fermi gas done from the weak-coupling region to the unitarity limit. Our result would be useful for the study of many-body quantum corrections in the BCS–BEC crossover region of a strongly interacting Fermi superfluid. Ultracold Fermi gas BCS–BEC crossover Quantum fluctuations van Wyk, P. aut Hanai, R. aut Kagamihara, D. aut Inotani, D. aut Horikoshi, M. aut Ohashi, Y. aut Enthalten in Journal of low temperature physics Springer US, 1969 187(2016), 5-6 vom: 03. Nov., Seite 677-684 (DE-627)129546267 (DE-600)218311-0 (DE-576)014996642 0022-2291 nnns volume:187 year:2016 number:5-6 day:03 month:11 pages:677-684 https://doi.org/10.1007/s10909-016-1691-9 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_22 GBV_ILN_70 GBV_ILN_170 GBV_ILN_4126 GBV_ILN_4323 AR 187 2016 5-6 03 11 677-684 |
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10.1007/s10909-016-1691-9 doi (DE-627)OLC2036828841 (DE-He213)s10909-016-1691-9-p DE-627 ger DE-627 rakwb eng 530 VZ Tajima, H. verfasserin aut Zero-Temperature Properties of a Strongly Interacting Superfluid Fermi Gas in the BCS–BEC Crossover Region 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media New York 2016 Abstract We investigate thermodynamic properties and effects of quantum fluctuations in the Bardeen–Cooper–Schrieffer (BCS)–Bose–Einstein condensation (BEC) crossover region of a superfluid Fermi gas in the low-temperature limit. Including strong-coupling corrections within the framework of an extended T-matrix approximation, we numerically compute the isothermal compressibility $$\chi _n$$. While quantum fluctuation effects on $$\chi _n$$ in the strong-coupling BEC regime are explained by the quantum depletion due to a repulsive interaction between tightly bound molecules, effects of self-energy shift on the Fermi chemical potential are found to enhance $$\chi _n$$ in the weak-coupling BCS region. We also show that the calculated $$\chi _n$$ agrees well with the recent experiment on a $$^6$$Li Fermi gas done from the weak-coupling region to the unitarity limit. Our result would be useful for the study of many-body quantum corrections in the BCS–BEC crossover region of a strongly interacting Fermi superfluid. Ultracold Fermi gas BCS–BEC crossover Quantum fluctuations van Wyk, P. aut Hanai, R. aut Kagamihara, D. aut Inotani, D. aut Horikoshi, M. aut Ohashi, Y. aut Enthalten in Journal of low temperature physics Springer US, 1969 187(2016), 5-6 vom: 03. Nov., Seite 677-684 (DE-627)129546267 (DE-600)218311-0 (DE-576)014996642 0022-2291 nnns volume:187 year:2016 number:5-6 day:03 month:11 pages:677-684 https://doi.org/10.1007/s10909-016-1691-9 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_22 GBV_ILN_70 GBV_ILN_170 GBV_ILN_4126 GBV_ILN_4323 AR 187 2016 5-6 03 11 677-684 |
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Zero-Temperature Properties of a Strongly Interacting Superfluid Fermi Gas in the BCS–BEC Crossover Region |
| abstract |
Abstract We investigate thermodynamic properties and effects of quantum fluctuations in the Bardeen–Cooper–Schrieffer (BCS)–Bose–Einstein condensation (BEC) crossover region of a superfluid Fermi gas in the low-temperature limit. Including strong-coupling corrections within the framework of an extended T-matrix approximation, we numerically compute the isothermal compressibility $$\chi _n$$. While quantum fluctuation effects on $$\chi _n$$ in the strong-coupling BEC regime are explained by the quantum depletion due to a repulsive interaction between tightly bound molecules, effects of self-energy shift on the Fermi chemical potential are found to enhance $$\chi _n$$ in the weak-coupling BCS region. We also show that the calculated $$\chi _n$$ agrees well with the recent experiment on a $$^6$$Li Fermi gas done from the weak-coupling region to the unitarity limit. Our result would be useful for the study of many-body quantum corrections in the BCS–BEC crossover region of a strongly interacting Fermi superfluid. © Springer Science+Business Media New York 2016 |
| abstractGer |
Abstract We investigate thermodynamic properties and effects of quantum fluctuations in the Bardeen–Cooper–Schrieffer (BCS)–Bose–Einstein condensation (BEC) crossover region of a superfluid Fermi gas in the low-temperature limit. Including strong-coupling corrections within the framework of an extended T-matrix approximation, we numerically compute the isothermal compressibility $$\chi _n$$. While quantum fluctuation effects on $$\chi _n$$ in the strong-coupling BEC regime are explained by the quantum depletion due to a repulsive interaction between tightly bound molecules, effects of self-energy shift on the Fermi chemical potential are found to enhance $$\chi _n$$ in the weak-coupling BCS region. We also show that the calculated $$\chi _n$$ agrees well with the recent experiment on a $$^6$$Li Fermi gas done from the weak-coupling region to the unitarity limit. Our result would be useful for the study of many-body quantum corrections in the BCS–BEC crossover region of a strongly interacting Fermi superfluid. © Springer Science+Business Media New York 2016 |
| abstract_unstemmed |
Abstract We investigate thermodynamic properties and effects of quantum fluctuations in the Bardeen–Cooper–Schrieffer (BCS)–Bose–Einstein condensation (BEC) crossover region of a superfluid Fermi gas in the low-temperature limit. Including strong-coupling corrections within the framework of an extended T-matrix approximation, we numerically compute the isothermal compressibility $$\chi _n$$. While quantum fluctuation effects on $$\chi _n$$ in the strong-coupling BEC regime are explained by the quantum depletion due to a repulsive interaction between tightly bound molecules, effects of self-energy shift on the Fermi chemical potential are found to enhance $$\chi _n$$ in the weak-coupling BCS region. We also show that the calculated $$\chi _n$$ agrees well with the recent experiment on a $$^6$$Li Fermi gas done from the weak-coupling region to the unitarity limit. Our result would be useful for the study of many-body quantum corrections in the BCS–BEC crossover region of a strongly interacting Fermi superfluid. © Springer Science+Business Media New York 2016 |
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| title_short |
Zero-Temperature Properties of a Strongly Interacting Superfluid Fermi Gas in the BCS–BEC Crossover Region |
| url |
https://doi.org/10.1007/s10909-016-1691-9 |
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| author2 |
van Wyk, P. Hanai, R. Kagamihara, D. Inotani, D. Horikoshi, M. Ohashi, Y. |
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van Wyk, P. Hanai, R. Kagamihara, D. Inotani, D. Horikoshi, M. Ohashi, Y. |
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129546267 |
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| doi_str |
10.1007/s10909-016-1691-9 |
| up_date |
2024-07-04T04:17:21.916Z |
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