Stability and excitations of solitons in 2D Bose-Einstein condensates
Authors: Tsuchiya S., Dalfovo F., Tozzo C., Pitaevskii L.
Autors Affiliation: CNR-INFM BEC;
Physics Department, University of Trento;
Scuola Normale Superiore, Pisa;
Kapitza Institute for Physical Problems, Moscow, Russia
Abstract: The small oscillations of solitons in 2D Bose-Einstein condensates are investigated by solving the Kadomtsev-Petviashvili equation which is valid when the velocity of the soliton approaches the speed of sound. We show that the soliton is stable and that the lowest excited states obey the same dispersion law as the one of the stable branch of excitations of a 1D gray soliton in a 2D condensate. The role of these states in thermodynamics is discussed.
Journal/Review: JOURNAL OF LOW TEMPERATURE PHYSICS
Volume: 148 (3-4) Pages from: 393 to: 398
KeyWords: Ultracold gases; BEC; DOI: 10.1007/s10909-007-9400-3Citations: 4data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2022-06-19References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here