%0 Journal Article %T Mott-insulating and glassy phases of polaritons in 1D arrays of coupled cavities %A Davide Rossini %A Rosario Fazio %J Physics %D 2007 %I arXiv %R 10.1103/PhysRevLett.99.186401 %X By means of analytical and numerical methods we analyze the phase diagram of polaritons in one-dimensional coupled cavities. We locate the phase boundary, discuss the behavior of the polariton compressibility and visibility fringes across the critical point, and find a non-trivial scaling of the phase boundary as a function of the number of atoms inside each cavity. We also predict the emergence of a polaritonic glassy phase when the number of atoms fluctuates from cavity to cavity. %U http://arxiv.org/abs/0705.1062v3