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Title: An Adaptive Fast Gauss Transform in Two Dimensions

Journal Article · · SIAM Journal on Scientific Computing
DOI:https://doi.org/10.1137/17m1159865· OSTI ID:1511004
 [1];  [1]
  1. New York Univ. (NYU), New York, NY (United States)

A variety of problems in computational physics and engineering require the convolution of the heat kernel (a Gaussian) with either discrete sources, densities supported on boundaries, or continuous volume distributions. We present a unified fast Gauss transform for this purpose in two dimensions, making use of an adaptive quad-tree discretization on a unit square which is assumed to contain all sources. Our implementation permits either free-space or periodic boundary conditions to be imposed, and is efficient for any choice of variance in the Gaussian.

Research Organization:
New York Univ. (NYU), NY (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
FG02-88ER25053
OSTI ID:
1511004
Journal Information:
SIAM Journal on Scientific Computing, Vol. 40, Issue 3; ISSN 1064-8275
Publisher:
SIAMCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 6 works
Citation information provided by
Web of Science

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