ListarUJI: Investigación por tema "Zassenhaus formula"

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    • openAccess   A Unifying Framework for Perturbative Exponential Factorizations 

      Arnal, A.; Casas, Fernando; Chiralt, Cristina; Oteo, José-Angel MDPI (2021-03-17)
      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 the product expansion. In this scheme, ...

    • openAccess   Efficient computation of the Zassenhaus formula 

      Casas, Fernando; Murua, Ander; Nadinic, Mladen Elsevier (2012-11)
      A new recursive procedure to compute the Zassenhaus formula up to high order is presented, providing each exponent in the factorization directly as a linear combination of independent commutators and thus containing the ...

    • closedAccess   On the structure and convergence of the symmetric Zassenhaus formula 

      Arnal, A.; Casas, Fernando; Chiralt, Cristina Elsevier (2017-08)
      We propose and analyze a symmetric version of the Zassenhaus formula for disentangling the exponential of two non-commuting operators. A recursive procedure for generating the expansion up to any order is presented which ...