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Partially suppressed long-range order in the Bose-Einstein condensation of polaritons

Davide Sarchi·Vincenzo Savona
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Abstract

We adopt a kinetic theory of polariton non-equilibrium Bose-Einstein condensation, to describe the formation of off-diagonal long-range order. The theory accounts properly for the dominant role of quantum fluctuations in the condensate. In realistic situations with optical excitation at high energy, it predicts a significant depletion of the condensate caused by long-wavelength fluctuations. As a consequence, the one-body density matrix in space displays a partially suppressed long-range order and a pronounced dependence on the finite size of the system.

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Davide Sarchi, Vincenzo Savona. 2007-02-01. Partially suppressed long-range order in the Bose-Einstein condensation of polaritons. https://doi.org/10.1103/physrevb.75.115326

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