Bose-Einstein condensate in a random potential
Authors: Lye J., Fallani L., Modugno M., Wiersma D., Fort C., Inguscio M.
Autors Affiliation: Univ Florence, Dipartimento Fis, LENS, I-50019 Sesto Fiorentino, FI, Italy;
Univ Florence, INFM, I-50019 Sesto Fiorentino, FI, Italy;
Univ Trent, BEC INFM Ctr, I-38050 Povo, TN, Italy;
INFM, MATIS, Catania, Italy
Abstract: An optical speckle potential is used to investigate the static and dynamic properties of a Bose-Einstein condensate in the presence of disorder. With small levels of disorder, stripes are observed in the expanded density profile and strong damping of dipole and quadrupole oscillations is seen. Uncorrelated frequency shifts of the two modes are measured and are explained using a sum-rules approach and by the numerical solution of the Gross-Pitaevskii equation.
Journal/Review: PHYSICAL REVIEW LETTERS
Volume: 95 Pages from: 070401 to: 070401
KeyWords: superfluid-insulator transition; collective excitations; optical lattice; 2 dimensions; gasDOI: 10.1103/PhysRevLett.95.070401Citations: 335data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2023-03-26References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here