Papers › Computer-Assisted Proofs of Solitons in Bose-Einstein Condensates
Computer-Assisted Proofs of Solitons in Bose-Einstein Condensates
Miguel Ayala, Carlos García-Azpeitia, Jean-Philippe Lessard
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We provide a framework for turning a numerical simulation of a gap soliton in the one-dimensional Gross-Pitaevskii equation into a rigorous mathematical proof of its existence. These nonlinear localized solutions play a central role in the study of Bose-Einstein condensates (BECs). We reformulate the problem of proving their existence as the search for homoclinic orbits in a dynamical system. We then apply computer-assisted proof techniques to obtain verifiable conditions under which a numerically approximated trajectory corresponds to a true homoclinic orbit. This work also presents the first examples of computer-assisted proofs of gap solitons in the Gross-Pitaevskii equation on non-perturbative parameter regimes.
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