Influence of atomic collisions on spectrum of light scattered from an fdeformed BoseEinst.pdfVIP

Influence of atomic collisions on spectrum of light scattered from an f -deformed Bose-Einstein condensate 1 2 3 Z. Haghshenasfard , M. H. Naderi and M. Soltanolkotabi Quantum Optics Group, Department of Physics, University of Isfahan , Hezar Jerib, Isfahan , 81746-73441, Iran Abstract In this paper, we investigate the spectrum of light scattered from a Bose-Einstein condensate in the framework of f -deformed boson. We use an f -deformed quantum model in which the Gardiner’s phonon operators for BEC are deformed by an operator- valued ˆ ˆ function, f (n) , of the particle-number operator n . We consider the collisions between the atoms as a special kind of f -deformation. The collision rate κ is regarded as the deformation parameter and the spectrum of light scattered from the deformed BEC is analyzed. In particular, we find that with increasing the values of 1 deformation parameters κ and η ( N , total number of N condensate atoms) the scattering spectrum shows deviation from the spectrum associated with nondeformed Bose-Einstein condensate. Keywords: f - deformed Bose-Einstein condensate, light scattering, atomic collisions PACS numbers: 03.75.Fi, 42.50.Ct, 03.65.Fd 1 Introduction The recent experimental realization