Excitations in a nonequilibrium Bose-Einstein condensate of exciton polaritons
Authors: Wouters M., Carusotto I.
Autors Affiliation: TFVS, Universiteit Antwerpen, Groenenborgerlaan 171, 2020 Antwerpen, Belgium; BEC-CNR-INFM and Dipartimento di Fisica, Universita` di Trento, I-38050 Povo, Italy
Abstract: We develop a mean-field theory of the dynamics of a nonequilibrium Bose-Einstein condensate of exciton polaritons in a semiconductor microcavity. The spectrum of elementary excitations around the stationary state is analytically studied by means of a generalized Gross-Pitaevskii equation. A diffusive behavior of the Goldstone mode is found in the spatially homogeneous case and new features are predicted for the Josephson effect in a two-well geometry.
Journal/Review: PHYSICAL REVIEW LETTERS
Volume: 99 (14) Pages from: 140402-1 to: 140402-4
KeyWords: Bose-Einstein condensate; exciton-polaritons; elementary excitations; Bogoliubov; DOI: 10.1103/PhysRevLett.99.140402Citations: 445data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2023-09-17References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here