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Article: Cavity-induced Fulde-Ferrell-Larkin-Ovchinnikov superfluids of ultracold Fermi gases
Title | Cavity-induced Fulde-Ferrell-Larkin-Ovchinnikov superfluids of ultracold Fermi gases |
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Authors | |
Issue Date | 2020 |
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, 2020, v. 101 n. 2, article no. 023612 How to Cite? |
Abstract | Motivated by recent experimental advances in ultracold atomic gases placed in cavities, we study the influence of the atom-cavity coupling on the Fermi gases trapped in optical lattices. By adiabatic elimination of the cavity photon field, the atom-cavity coupling gives rise to effective long-range interactions. It results in a variety of two-body scattering processes, during which the atomic pairs can acquire an additional center-of-mass momentum. This reveals the possibility of Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) superfluids in which the atomic pairing momentum is nonzero. By inspecting the phase diagram at the mean-field level, we confirm that the FFLO superfluid phase coexists with the zero-momentum pairing, and is the ground state that hosts the lowest energy. Furthermore, the order parameter characterizing the non-zero-momentum pairing does not vanish as long as the cavity-induced interaction is present. |
Persistent Identifier | http://hdl.handle.net/10722/286280 |
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 | Zheng, Z | - |
dc.contributor.author | Wang, ZD | - |
dc.date.accessioned | 2020-08-31T07:01:42Z | - |
dc.date.available | 2020-08-31T07:01:42Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Physical Review A: covering atomic, molecular, and optical physics and quantum information, 2020, v. 101 n. 2, article no. 023612 | - |
dc.identifier.issn | 2469-9926 | - |
dc.identifier.uri | http://hdl.handle.net/10722/286280 | - |
dc.description.abstract | Motivated by recent experimental advances in ultracold atomic gases placed in cavities, we study the influence of the atom-cavity coupling on the Fermi gases trapped in optical lattices. By adiabatic elimination of the cavity photon field, the atom-cavity coupling gives rise to effective long-range interactions. It results in a variety of two-body scattering processes, during which the atomic pairs can acquire an additional center-of-mass momentum. This reveals the possibility of Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) superfluids in which the atomic pairing momentum is nonzero. By inspecting the phase diagram at the mean-field level, we confirm that the FFLO superfluid phase coexists with the zero-momentum pairing, and is the ground state that hosts the lowest energy. Furthermore, the order parameter characterizing the non-zero-momentum pairing does not vanish as long as the cavity-induced interaction is present. | - |
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 2020 by The American Physical Society. This article is available online at https://doi.org/10.1103/PhysRevA.101.023612. | - |
dc.title | Cavity-induced Fulde-Ferrell-Larkin-Ovchinnikov superfluids of ultracold Fermi gases | - |
dc.type | Article | - |
dc.identifier.email | Zheng, Z: zhenzhen.dr@hku.hk | - |
dc.identifier.email | Wang, ZD: physhead@hku.hk | - |
dc.identifier.authority | Wang, ZD=rp00802 | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1103/PhysRevA.101.023612 | - |
dc.identifier.scopus | eid_2-s2.0-85081107611 | - |
dc.identifier.hkuros | 313284 | - |
dc.identifier.volume | 101 | - |
dc.identifier.issue | 2 | - |
dc.identifier.spage | article no. 023612 | - |
dc.identifier.epage | article no. 023612 | - |
dc.identifier.isi | WOS:000514313800008 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 2469-9926 | - |