Macroscopic periodic tunneling of Fermi atoms in the BCS-BEC crossover
Year: 2008
Authors: Salasnich L., Manini N, Toigo F.
Autors Affiliation: CNR-INFM, Via Marzolo 8 Padova, Italy;
Dipartimento di fisica and CNISM, Universitą di Milano, Via Celoria 16, 20133 Milano Italy;
Dipartimento di fisica “Galileo Galilei” and CNISM, Universitą 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.
Journal/Review: PHYSICAL REVIEW A
Volume: 77 (4) Pages from: 043609 to: 043609
KeyWords: bcs-bec crossoverDOI: 10.1103/PhysRevA.77.043609ImpactFactor: 2.908Citations: 46data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-11-10References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here