Quantum fluctuations in coupled dark solitons in trapped Bose-Einstein condensates
C. K. Law, P. T. Leung, M. -C. Chu
Abstract
We show that the quantum fluctuations associated with the Bogoliubov quasiparticle vacuum can be strongly concentrated inside dark solitons in a trapped Bose Einstein condensate. We identify a finite number of anomalous modes that are responsible for such quantum phenomena. The fluctuations in these anomalous modes correspond to the `zero-point' oscillations in coupled dark solitons.
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