How to Calculate the Exponential of Matrices
Quantum Physics
2012-07-27 v1 Mathematical Physics
math.MP
Abstract
How to calculate the exponential of matrices in an explicit manner is one of fundamental problems in almost all subjects in Science. Especially in Mathematical Physics or Quantum Optics many problems are reduced to this calculation by making use of some approximations whether they are appropriate or not. However, it is in general not easy. In this paper we give a very useful formula which is both elementary and getting on with computer.
Cite
@article{arxiv.quant-ph/0604115,
title = {How to Calculate the Exponential of Matrices},
author = {Kazuyuki Fujii and Hiroshi Oike},
journal= {arXiv preprint arXiv:quant-ph/0604115},
year = {2012}
}
Comments
Latex ; 15 pages ; 1 figure. The result is not new unfortunately, while the method is elementary and new. Since the formula is very convenient, it may be worth recording