Superfluid Fraction in an Interacting Spatially Modulated Bose-Einstein Condensate.

Anisotropy Temperature

Journal

Physical review letters
ISSN: 1079-7114
Titre abrégé: Phys Rev Lett
Pays: United States
ID NLM: 0401141

Informations de publication

Date de publication:
02 Jun 2023
Historique:
received: 03 02 2023
revised: 07 04 2023
accepted: 09 05 2023
medline: 16 6 2023
pubmed: 16 6 2023
entrez: 16 6 2023
Statut: ppublish

Résumé

At zero temperature, a Galilean-invariant Bose fluid is expected to be fully superfluid. Here we investigate theoretically and experimentally the quenching of the superfluid density of a dilute Bose-Einstein condensate due to the breaking of translational (and thus Galilean) invariance by an external 1D periodic potential. Both Leggett's bound fixed by the knowledge of the total density and the anisotropy of the sound velocity provide a consistent determination of the superfluid fraction. The use of a large-period lattice emphasizes the important role of two-body interactions on superfluidity.

Identifiants

DOI: 10.1103/PhysRevLett.130.226003 PMID: 37327429
pubmed: 37327429
doi: 10.1103/PhysRevLett.130.226003
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

226003

Auteurs

G Chauveau (G)

Laboratoire Kastler Brossel, Collège de France, CNRS, ENS-PSL University, Sorbonne Université, 11 Place Marcelin Berthelot, 75005 Paris, France.

C Maury (C)

Laboratoire Kastler Brossel, Collège de France, CNRS, ENS-PSL University, Sorbonne Université, 11 Place Marcelin Berthelot, 75005 Paris, France.

F Rabec (F)

Laboratoire Kastler Brossel, Collège de France, CNRS, ENS-PSL University, Sorbonne Université, 11 Place Marcelin Berthelot, 75005 Paris, France.

C Heintze (C)

Laboratoire Kastler Brossel, Collège de France, CNRS, ENS-PSL University, Sorbonne Université, 11 Place Marcelin Berthelot, 75005 Paris, France.

G Brochier (G)

Laboratoire Kastler Brossel, Collège de France, CNRS, ENS-PSL University, Sorbonne Université, 11 Place Marcelin Berthelot, 75005 Paris, France.

S Nascimbene (S)

Laboratoire Kastler Brossel, Collège de France, CNRS, ENS-PSL University, Sorbonne Université, 11 Place Marcelin Berthelot, 75005 Paris, France.

J Dalibard (J)

Laboratoire Kastler Brossel, Collège de France, CNRS, ENS-PSL University, Sorbonne Université, 11 Place Marcelin Berthelot, 75005 Paris, France.

J Beugnon (J)

Laboratoire Kastler Brossel, Collège de France, CNRS, ENS-PSL University, Sorbonne Université, 11 Place Marcelin Berthelot, 75005 Paris, France.

S M Roccuzzo (SM)

Pitaevskii BEC Center, CNR-INO and Dipartimento di Fisica, Università di Trento, I-38123 Trento, Italy and Trento Institute for Fundamental Physics and Applications, INFN, 38123 Trento, Italy.

S Stringari (S)

Pitaevskii BEC Center, CNR-INO and Dipartimento di Fisica, Università di Trento, I-38123 Trento, Italy and Trento Institute for Fundamental Physics and Applications, INFN, 38123 Trento, Italy.

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Classifications MeSH

questionsmedicales.fr › Phénomènes chimiques › Anisotropie › Superfluid Fraction in an Interacting...
questionsmedicales.fr › Environnement et santé publique › Environnement › Concepts météorologiques › Atmosphère › Temps (météorologie) › Température › Superfluid Fraction in an Interacting...