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Article: Cavity-induced Fulde-Ferrell-Larkin-Ovchinnikov superfluids of ultracold Fermi gases

TitleCavity-induced Fulde-Ferrell-Larkin-Ovchinnikov superfluids of ultracold Fermi gases
Authors
Issue Date2020
PublisherAmerican 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?
AbstractMotivated 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 Identifierhttp://hdl.handle.net/10722/286280
ISSN
2019 Impact Factor: 2.777
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZheng, Z-
dc.contributor.authorWang, ZD-
dc.date.accessioned2020-08-31T07:01:42Z-
dc.date.available2020-08-31T07:01:42Z-
dc.date.issued2020-
dc.identifier.citationPhysical Review A: covering atomic, molecular, and optical physics and quantum information, 2020, v. 101 n. 2, article no. 023612-
dc.identifier.issn2469-9926-
dc.identifier.urihttp://hdl.handle.net/10722/286280-
dc.description.abstractMotivated 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.languageeng-
dc.publisherAmerican Physical Society. The Journal's web site is located at http://journals.aps.org/pra/-
dc.relation.ispartofPhysical Review A: covering atomic, molecular, and optical physics and quantum information-
dc.rightsCopyright 2020 by The American Physical Society. This article is available online at https://doi.org/10.1103/PhysRevA.101.023612.-
dc.titleCavity-induced Fulde-Ferrell-Larkin-Ovchinnikov superfluids of ultracold Fermi gases-
dc.typeArticle-
dc.identifier.emailZheng, Z: zhenzhen.dr@hku.hk-
dc.identifier.emailWang, ZD: physhead@hku.hk-
dc.identifier.authorityWang, ZD=rp00802-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevA.101.023612-
dc.identifier.scopuseid_2-s2.0-85081107611-
dc.identifier.hkuros313284-
dc.identifier.volume101-
dc.identifier.issue2-
dc.identifier.spagearticle no. 023612-
dc.identifier.epagearticle no. 023612-
dc.identifier.isiWOS:000514313800008-
dc.publisher.placeUnited States-

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