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  • Title: Dicke-model phase transition in the quantum motion of a Bose-Einstein condensate in an optical cavity.
    Author: Nagy D, Kónya G, Szirmai G, Domokos P.
    Journal: Phys Rev Lett; 2010 Apr 02; 104(13):130401. PubMed ID: 20481867.
    Abstract:
    We show that the motion of a laser-driven Bose-Einstein condensate in a high-finesse optical cavity realizes the spin-boson Dicke model. The quantum phase transition of the Dicke model from the normal to the superradiant phase corresponds to the self-organization of atoms from the homogeneous into a periodically patterned distribution above a critical driving strength. The fragility of the ground state due to photon measurement induced backaction is calculated.
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