Quantum dynamics of instability-induced pulsations of a Bose-Einstein condensate in an optical lattice
Shrestha, Uttam, Javanainen, Juha and Ruostekoski, Janne (2009) Quantum dynamics of instability-induced pulsations of a Bose-Einstein condensate in an optical lattice. Physical Review A, 79, (4), 043617-[13pp]. (doi:10.1103/PhysRevA.79.043617).
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We study quantum dynamics of a Bose-Einstein condensate in a one-dimensional optical lattice in the limit of weak atom-atom interactions within the truncated Wigner approximation for a system with one dynamically
unstable mode. This extends previous classical studies of a pulsating dynamical instability in which atoms
periodically collect together and subsequently disperse back into the initial homogeneous state. We observe
that the quasiperiodic behavior still persists in the presence of quantum fluctuations for a single realization that represents a typical experimental outcome, but ensemble averages show various manifestations of quantum statistics. Quantum effects become more prominent when the effective interaction strength is increased.
|Subjects:||Q Science > QA Mathematics
Q Science > QC Physics
|Divisions:||University Structure - Pre August 2011 > School of Mathematics > Applied Mathematics
University Structure - Pre August 2011 > School of Physics and Astronomy > Quantum, Light and Matter
|Date Deposited:||17 Apr 2009|
|Last Modified:||14 Jun 2013 01:02|
|Contributors:||Shrestha, Uttam (Author)
Javanainen, Juha (Author)
Ruostekoski, Janne (Author)
|Date:||16 April 2009|
|Contact Email Address:||email@example.com|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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