A fast spectral method for electrostatics in doubly-periodic slit channels
Ondrej Maxian,
Raul P. Peláez,
Leslie Greengard
et al.
Abstract:We develop a fast method for computing the electrostatic energy and forces for a collection of charges in doubly-periodic slabs with jumps in the dielectric permittivity at the slab boundaries. Our method achieves spectral accuracy by using Ewald splitting to replace the original Poisson equation for nearly-singular sources with a smooth far-field Poisson equation, combined with a localized near-field correction.Unlike existing spectral Ewald methods, which make use of the Fourier transform in the aperiodic di… Show more
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