e to the A, in a New Way, Some More to Say
Mathematical Physics
2007-05-23 v2 High Energy Physics - Theory
math.MP
Abstract
Expressions are given for the exponential of a hermitian matrix, A. Replacing A by iA these are explicit formulas for the Fourier transform of exp(iA). They extend to any size matrix the previous results for the 2 X 2, 3 X 3, and 4 X 4 cases. The expressions are elegant and should prove useful.
Keywords
Cite
@article{arxiv.math-ph/0004023,
title = {e to the A, in a New Way, Some More to Say},
author = {P. Federbush},
journal= {arXiv preprint arXiv:math-ph/0004023},
year = {2007}
}
Comments
5 pages, Added detailed proof