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Phys. Rev. A 74, 045801 (2006) [3 pages]

Statistical properties of the continuum Salerno model

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M. Marklund1,2, P. K. Shukla1,2,3,4, R. Bingham5, and J. T. Mendonça2,6
1Centre for Nonlinear Physics, Department of Physics, Umeå University, SE-901 87 Umeå, Sweden
2Centre for Fundamental Physics, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 OQX, United Kingdom
3Institut für Theoretische Physik IV and Centre for Plasma Science and Astrophysics, Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, D-44780 Bochum, Germany
4Department of Physics, University of Strathclyde, Glasgow, Scotland, G4 ONG, United Kingdom
5Space Science & Technology Department, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 OQX, United Kingdom
6Centro de Física dos Plasmas, Instituto Superior Técnico, 1049-001 Lisboa, Portugal

Received 21 April 2006; published 4 October 2006

The statistical properties of the Salerno model are investigated. In particular, a comparison between the coherent and partially coherent wave modes is made for the case of a random-phased wave packet. It is found that the random-phased-induced spectral broadening gives rise to the damping of instabilities, but also a broadening of the instability region in quasiparticle momentum space. The results can be of significance for the condensation of magnetic-moment bosons in deep optical lattices.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.74.045801
DOI:
10.1103/PhysRevA.74.045801
PACS:
42.65.Sf, 63.20.Pw, 03.75.Lm
 
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