Phase fluctuations and first-order correlation functions of dissipative Bose-Einstein condensates
arXiv:1403.8041 · doi:10.1103/PhysRevA.89.053627
Abstract
We investigate the finite lifetime effects on first-order correlation functions of dissipative Bose-Einstein condensates. By taking into account the phase fluctuations up to all orders, we show that the finite lifetime effects are neglible for the spatial first-order correlation functions, but have an important effect on the temporal correlations. As an application, we calculate the one-particle density matrix of a quasi-condensate of photons. Finally, we also consider the photons in the normal state and we demonstrate that the finite lifetime effects decrease both the spatial and temporal first-order correlation functions.
arXiv comment8 pages, 5 figures
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