Spectrum and thermal fluctuations of a microcavity polariton Bose-Einstein condensate

The Hartree-Fock-Popov theory of interacting Bose particles is developed, for modeling exciton-polaritons in semiconductor microcavities undergoing Bose-Einstein condensation. A self-consistent treatment of the linear exciton-photon coupling and of the exciton nonlinearity provides a thermal equilibrium description of the collective excitation spectrum, of the polariton energy shifts and of the phase diagram. Quantitative predictions support recent experimental findings.


Published in:
Physical Review B, 77, 045304
Year:
2008
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 Record created 2009-09-22, last modified 2018-03-17

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