Macroscopic periodic tunneling of Fermi atoms in the BCS-BEC crossover

Anno: 2008

Autori: Salasnich L., Manini N, Toigo F.

Affiliazione autori: CNR-INFM, Via Marzolo 8 Padova, Italy;
Dipartimento di fisica and CNISM, Università di Milano, Via Celoria 16, 20133 Milano Italy;
Dipartimento di fisica “Galileo Galilei” and CNISM, Università di Padova, – Via Marzolo 8 Padova, Italy; Organization-

Abstract: We study the macroscopic quantum tunneling of two weakly linked superfluids made of interacting fermionic atoms. We derive atomic Josephson junction equations and find that zero-mode and pi-mode frequencies of coherent atomic oscillations depend on the tunneling coefficient and the sound velocity of the superfluid. By considering a superfluid of K-40 atoms, we calculate these oscillation frequencies in the crossover from the Bardeen-Cooper-Schrieffer state of weakly bound Cooper pairs to the Bose-Einstein condensate of strongly bound molecular dimers.

Giornale/Rivista: PHYSICAL REVIEW A

Volume: 77 (4)      Da Pagina: 043609  A: 043609

Parole chiavi: bcs-bec crossover
DOI: 10.1103/PhysRevA.77.043609

Citazioni: 46
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-05-12
Riferimenti tratti da Isi Web of Knowledge: (solo abbonati)
Link per visualizzare la scheda su IsiWeb: Clicca qui
Link per visualizzare la citazioni su IsiWeb: Clicca qui