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Article: Strongly interacting p-wave Fermi gas in two dimensions: Universal relations and breathing mode
Title | Strongly interacting p-wave Fermi gas in two dimensions: Universal relations and breathing mode |
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Authors | |
Issue Date | 2017 |
Publisher | American Physical Society. The Journal's web site is located at http://journals.aps.org/pra/ |
Citation | Physical Review A: covering atomic, molecular, and optical physics and quantum information, 2017, v. 95 n. 2, article no. 023603 , p. 1-11 How to Cite? |
Abstract | The contact is an important concept that characterizes the universal properties of a strongly interacting quantum gas. It appears in both thermodynamic (energy, pressure, etc.) and dynamic quantities (radio-frequency and Bragg spectroscopies, etc.) of the system. Very recently, the concept of contact was extended to higher partial waves; in particular, the p-wave contacts have been experimentally probed in recent experiments. So far, discussions on p-wave contacts have been limited to three dimensions. In this paper, we generalize the p-wave contacts to two dimensions and derive a series of universal relations, including the adiabatic relations, high-momentum distribution, virial theorem, and pressure relation. At the high-temperature and low-density limit, we calculate the p-wave contacts explicitly using virial expansion. A formula which directly connects the shift of the breathing-mode frequency and the p-wave contacts is given in a harmonically trapped system. Finally, we also derive the relationships between interaction parameters in three- and two-dimensional Fermi gases and discuss possible experimental realization of a two-dimensional Fermi gas with p-wave interactions. |
Persistent Identifier | http://hdl.handle.net/10722/239578 |
ISSN | 2023 Impact Factor: 2.6 2023 SCImago Journal Rankings: 1.081 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Zhang, Y | - |
dc.contributor.author | Zhang, S | - |
dc.date.accessioned | 2017-03-21T09:16:06Z | - |
dc.date.available | 2017-03-21T09:16:06Z | - |
dc.date.issued | 2017 | - |
dc.identifier.citation | Physical Review A: covering atomic, molecular, and optical physics and quantum information, 2017, v. 95 n. 2, article no. 023603 , p. 1-11 | - |
dc.identifier.issn | 2469-9926 | - |
dc.identifier.uri | http://hdl.handle.net/10722/239578 | - |
dc.description.abstract | The contact is an important concept that characterizes the universal properties of a strongly interacting quantum gas. It appears in both thermodynamic (energy, pressure, etc.) and dynamic quantities (radio-frequency and Bragg spectroscopies, etc.) of the system. Very recently, the concept of contact was extended to higher partial waves; in particular, the p-wave contacts have been experimentally probed in recent experiments. So far, discussions on p-wave contacts have been limited to three dimensions. In this paper, we generalize the p-wave contacts to two dimensions and derive a series of universal relations, including the adiabatic relations, high-momentum distribution, virial theorem, and pressure relation. At the high-temperature and low-density limit, we calculate the p-wave contacts explicitly using virial expansion. A formula which directly connects the shift of the breathing-mode frequency and the p-wave contacts is given in a harmonically trapped system. Finally, we also derive the relationships between interaction parameters in three- and two-dimensional Fermi gases and discuss possible experimental realization of a two-dimensional Fermi gas with p-wave interactions. | - |
dc.language | eng | - |
dc.publisher | American Physical Society. The Journal's web site is located at http://journals.aps.org/pra/ | - |
dc.relation.ispartof | Physical Review A: covering atomic, molecular, and optical physics and quantum information | - |
dc.rights | Copyright 2017 by The American Physical Society. This article is available online at https://doi.org/10.1103/PhysRevA.95.023603 | - |
dc.title | Strongly interacting p-wave Fermi gas in two dimensions: Universal relations and breathing mode | - |
dc.type | Article | - |
dc.identifier.email | Zhang, Y: yicaizha@hku.hk | - |
dc.identifier.email | Zhang, S: shizhong@hku.hk | - |
dc.identifier.authority | Zhang, S=rp01661 | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1103/PhysRevA.95.023603 | - |
dc.identifier.scopus | eid_2-s2.0-85012960826 | - |
dc.identifier.hkuros | 271538 | - |
dc.identifier.volume | 95 | - |
dc.identifier.issue | 2 | - |
dc.identifier.spage | article no. 023603, p. 1 | - |
dc.identifier.epage | article no. 023603, p. 11 | - |
dc.identifier.isi | WOS:000393496700012 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 2469-9926 | - |