Picture of two heads

Open Access research that challenges the mind...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including those from the School of Psychological Sciences & Health - but also papers by researchers based within the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

Discover more...

Two-stream instability in quasi-one-dimensional Bose-Einstein condensates

Tercas, H. and Mendonca, J.T. and Robb, G.R.M. and , Fundacao para a Ciencia e Tecnologia (FCT-Portugal) (Funder) and , Leverhulme Trust via research (Funder) (2009) Two-stream instability in quasi-one-dimensional Bose-Einstein condensates. Physical Review A, 79 (6). ISSN 1094-1622

PDF (pra.pdf)
pra.pdf - Final Published Version

Download (98kB) | Preview


We apply a kinetic model to predict the existence of an instability mechanism in elongated Bose-Einstein condensates. Our kinetic description, based on the Wigner formalism, is employed to highlight the existence of unstable Bogoliubov waves that may be excited in the counterpropagation configuration. We identify a dimensionless parameter, the Mach number at T=0, that tunes different regimes of stability. We also estimate the magnitude of the main parameters at which two-stream instability is expected to be observed under typical experimental conditions.