Alessio Chiocchetta, Iacopo Carusotto
We develop a generic theory of the fluctuations on top of a non-equilibrium Bose-Einstein condensate in reduced dimensions. Analytic expressions for the momentum distribution of the non-condensed cloud and for the long-distance behavior of the spatial coherence are obtained for the different cases. Comparison of our predictions with available experimental data on condensates of exciton-polaritons and on surface-emitting planar laser devices is finally made.
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http://arxiv.org/abs/1302.6158
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