activity
20172024
most citedOn the structure and convergence of the symmetric Zassenhaus formula

6 citations · 6 across the 6 of their papers we have counts for

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Showing 2024Show all

2 papers · 1 filter

math.NA2024

Exponential perturbative expansions and coordinate transformations

Ana Arnal, Fernando Casas, Cristina Chiralt

We propose a unified approach for different exponential perturbation techniques used in the treatment of time-dependent quantum mechanical problems, namely the Magnus expansion, th…

math.NA2024

A unifying framework for perturbative exponential factorizations

Ana Arnal, Fernando Casas, Cristina Chiralt

We propose a framework where Fer and Wilcox expansions for the solution of differential equations are derived from two particular choices for the initial transformation that seeds…