A new approach to the Baker-Campbell-Hausdorff expansion

2009/12/02 by Bratchikov, A. V.
#FOS: Physical sciences #Mathematical Physics (math-ph)

paper · doi:10.48550/arxiv.0912.0486

Abstract

For noncommutative variables x,y an expansion of log(exp(x)exp(y)) in powers of x+y is obtained.Each term of the series is given by an infinite sum in powers of x-y.The series is represented by diagrams.

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