Phase fluctuations and first-order correlation functions of dissipative Bose-Einstein condensates

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.

8 pages, 5 figures

References in corpus (3)

• Bose-Einstein condensation of photons in an optical microcavity
• Non-equilibrium quantum condensation in an incoherently pumped dissipative system
• Mean field theory and fluctuation spectrum of a pumped, decaying Bose-Fermi system across the quantum condensation transition

Cited by in corpus (5)

• Thermalization and breakdown of thermalization in photon condensates
• First-order spatial coherence measurements in a thermalized two-dimensional photonic quantum gas
• Polarization dynamics in a photon BEC
• Effects of dissipation on the superfluid-Mott-insulator transition of photons
• Exact results for polaron and molecule in one-dimensional spin-1/2 Fermi gas