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We show that the expansion of an initially confined interacting 1D Bose-Einstein condensate can exhibit Anderson localization in a weak random potential with correlation length ₑ. For speckle potentials the Fourier transform of the correlation function vanishes for momenta k>2/ₑ so that the Lyapunov exponent vanishes in the Born approximation for k>1/ₑ. Then, for the initial healing length of the condensate ₈₍>ₑ the localization is exponential, and for ₈₍<ₑ it changes to algebraic.
Sanchez-Palencia et al. (Wed,) studied this question.