Abstract
Microcavity polaritons, which at low temperatures can condense to a macroscopic coherent state, possess a polarization degree of freedom. This paper discusses the phase diagram of such a system, showing the boundaries between differently polarized condensates. The Bogoliubov approximation is shown to have problems in describing the transition between differently polarized phases; the Hartree-Fock-Popov approximation performs better, and compares well to exact results that can be used in the limit where the left- and right-circular polarization states decouple. The effects on the phase boundary of various symmetry breaking terms present in real microcavities are also considered.
Original language | English |
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Pages (from-to) | 205316 |
Number of pages | 6 |
Journal | Physical Review. B, Condensed matter and materials physics |
Volume | 78 |
Issue number | 20 |
DOIs | |
Publication status | Published - Nov 2008 |
Keywords
- BOSE-EINSTEIN CONDENSATION
- EXCITON-POLARITONS
- BEHAVIOR
- SYSTEMS