Weingarten Calculus and the IntHaar Package for Integrals over Compact Matrix Groups
Combinatorics
2016-12-23 v1 Representation Theory
Abstract
In this paper, we present a uniform formula for the integration of polynomials over the unitary, orthogonal, and symplectic groups using Weingarten calculus. From this description, we further simplify the integration formulas and give several optimizations for various cases. We implemented the optimized Weingarten calculus in Maple in a package called IntHaar for all three compact groups. Here we will discuss its functions, provide instructions for the package, and produce some examples of computed integrals.
Keywords
Cite
@article{arxiv.1612.07641,
title = {Weingarten Calculus and the IntHaar Package for Integrals over Compact Matrix Groups},
author = {Alejandro Ginory and Jongwon Kim},
journal= {arXiv preprint arXiv:1612.07641},
year = {2016}
}
Comments
21 pages, 4 figures, software available at: http://www.math.rutgers.edu/~ag930/