,Linear and Nonlinear Anderson Localization in a Curved Potential

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Disorder induced localization in the presence of nonlinearity and curvature is investigated.The time-resolved three-dimensional expansion of a wave packet in a bent cigar shaped potential with a focusing Kerr-like interaction term and Gaussian disorder is numerically analyzed.A self-consistent analytical theory,in which randomness,nonlinearity and geometry are determined by a single scaling parameter,is reported,and it is shown that curvature enhances localization.
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