Efficient solution of Poisson's equation with free boundary conditions

Details Efficient solution of Poisson's equation with free boundary conditions Efficient solution of Poisson's equation with free boundary conditions

2006-05-15

arxiv.org/abs/cond-mat/0605371v1

Physics

Condensed Matter

Materials Science

5 pages, 3 figures

Scientific paper

10.1063/1.2335442

Interpolating scaling functions give a faithful representation of a localized charge distribution by its values on a grid. For such charge distributions, using a Fast Fourier method, we obtain highly accurate electrostatic potentials for free boundary conditions at the cost of O(N log N) operations, where N is the number of grid points. Thus, with our approach, free boundary conditions are treated as efficiently as the periodic conditions via plane wave methods.

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