Excitations in a non-equilibrium Bose-Einstein condensate of exciton-polaritons

Details Excitations in a non-equilibrium Bose-Einstein condensate of exciton-polaritons Excitations in a non-equilibrium Bose-Einstein condensate of exciton-polaritons

2007-02-19

arxiv.org/abs/cond-mat/0702431v1

Physics

Condensed Matter

Other Condensed Matter

5 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.99.140402

We have developed a mean-field model to describe the dynamics of a non-equilibrium Bose-Einstein condensate of exciton-polaritons in a semiconductor microcavity. The spectrum of elementary excitations around the stationary state is analytically studied in different geometries. A diffusive behaviour of the Goldstone mode is found in the spatially homogeneous case and new features are predicted for the Josephson effect in a two-well geometry.

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