Work

Spin Waves in a One-Dimensional Spinor Bose Gas

Year: 2005

Type: article

Abstract: We study a one-dimensional (iso)spin 1/2 Bose gas with repulsive delta-function interaction by the Bethe Ansatz method and discuss the excitations above the polarized ground state. In addition to phonons the system features spin waves with a quadratic dispersion. We compute analytically and numerically the effective mass of the spin wave and show that the spin transport is greatly suppressed in the strong coupling regime, where the isospin-density (or "spin charge") separation is maximal. Using a hydrodynamic approach, we study spin excitations in a harmonically trapped system and discuss prospects for future studies of two-component ultracold atomic gases.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.95.150402

Authors: J. N. Fuchs, D. M. Gangardt, T. Keilmann, G. V. Shlyapnikov

Institutions: Université Paris-Sud, Laboratoire de physique des Solides, Laboratoire de Physique Théorique et Modèles Statistiques, Max Planck Institute of Quantum Optics, Van der Waals-Zeeman Institute, University of Amsterdam

Language: English

Topic: Cold Atom Physics and Bose-Einstein Condensates

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Stichting voor Fundamenteel Onderzoek der Materie, Centre National de la Recherche Scientifique

OpenAlex ID: W2161659999

FWCI: 3.074

Cites: 40

Cited by: 105

Related to: 10