title: Compression as a tool to detect bose glass in a cold atomic gas.
abstract: We suggest that measuring the variation of the radius of an atomic cloud when the harmonic trap confinement is varied makes it possible to monitor the disappearance of the insulating Mott phase of an ultracold atomic gas trapped in a disordered optical lattice. This paves the way for an unambiguous identification of a Bose glass phase in the system.
authors.affiliation: Laboratoire Kastler-Brossel, Université Pierre et Marie Curie-Paris 6, ENS, CNRS; 4 Place Jussieu, F-75005 Paris, France.
authors.forename: Dominique
authors.initials: D
authors.lastname: Delande
authors.forename: Jakub
authors.initials: J
authors.lastname: Zakrzewski