Excitations of strongly correlated polaritons
Other Condensed Matter
2010-06-02 v2
Abstract
We use an analytic slave-boson approach to calculate the elementary excitations of the Jaynes-Cummings-Hubbard Model (JCHM) describing strongly correlated polaritons on a lattice in various quantum optical systems. In the superfluid phase near the Mott transition we find a gapless, linear Goldstone mode and a gapped Amplitude mode corresponding to phase and density fluctuations, respectively. The sound velocity of the Goldstone mode develops a peculiar anomaly as a function of detuning at low densities, which persists into the weakly interacting regime of a polariton BEC.
Keywords
Cite
@article{arxiv.1001.1677,
title = {Excitations of strongly correlated polaritons},
author = {S. Schmidt and G. Blatter},
journal= {arXiv preprint arXiv:1001.1677},
year = {2010}
}
Comments
5 pages, 3 figures