Density correlations and analog dynamical Casimir emission of Bogoliubov phonons in modulated atomic Bose-Einstein condensatesI. Carusotto, R. Balbinot, A. Fabbri and A. RecatiEur. Phys. J. D, 56 3 (2010) 391-404DOI: https://doi.org/10.1140/epjd/e2009-00314-3