Fast and oblivious convolution quadrature can evaluate Schrödinger Green's-function convolutions with memory O(n0 + log N) and near-FFT speed, enabling long-time simulations of point-interaction Schrödinger models.
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Numerical approximation of the Schr\"odinger equation with concentrated potential
Fast and oblivious convolution quadrature can evaluate Schrödinger Green's-function convolutions with memory O(n0 + log N) and near-FFT speed, enabling long-time simulations of point-interaction Schrödinger models.