Universal Journal of Physics and Application Vol. 4(3), pp. 349 - 360
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BOGOLIUBOV TRANSFORMATIONS AND QUANTUM DECOHERENCE IN AN ATOMIC BOSE-EINSTEIN CONDENSATE

AUTHOR(S) INFORMATION: Birol T. and Müstecapliğlu Ö.E.

ABSTRACT

In this brief review, we discuss quantum decoherence of an atomic Bose-Einstein condensate using Bogoliubov transformation. In particular, condensate phase is introduced and its diffusion is studied. Validity of the Bogoliubov prescription is investigated and restored via the condensate phase. Role of quantum state of the condensate on the phase collapse is examined. Relation between the fluctuations in the condensate particle number and the dynamics of the condensate phase is clarified.