Incoherent Matter-Wave Solitons and Pairing Instability in an Attractively Interacting Bose-Einstein Condensate

Scientific paper - Original scientific paper

• Author: Hrvoje Buljan
• Author: Mordechai Segev
• Author: Amichay Vardi
• Author's institution: University of Zagreb; Faculty of Science; (Department of Physics)
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract (english)

The dynamics of matter-wave solitons in Bose-Einstein condensates (BEC) is considerably affected by the presence of a thermal cloud and the dynamical depletion of the condensate. Our numerical results, based on the time-dependent Hartree-Fock-Bogoliubov theory, demonstrate the collapse of the attractively interacting BEC via collisional emission of atom pairs into the thermal cloud, which splits the (quasi-one-dimensional) BEC soliton into two partially coherent solitonic structures of opposite momenta. These incoherent matter waves are analogous to optical random-phase solitons.

• Keywords (english): Bose-Einstein condensate; solitons; finite temperature; incoherent matter waves
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Physical Review Letters
• Numbering: vol. 95, no. 18, 180401
• p-ISSN: 0031-9007
• e-ISSN: 1079-7114
• DOI: https://doi.org/10.1103/PhysRevLett.95.180401
• URN:NBN: urn:nbn:hr:217:631846
• Publication: 2005
• Document URL: http://link.aps.org/doi/10.1103/PhysRevLett.95.180401
• Type of resource: Text
• Access conditions: Open access
• Public note: Copyright (2005) by the American Physical Society.
• Created on: 2019-10-15 13:44:51