A Simple Algebraic Technique in the Generalized Continued-Fraction Representation
Sam Nyung Yi, J. Y. Ryu, Sang Don Choi · Progress of Theoretical Physics · 1989
We obtained an generalized continued fraction representation containing two memory functions by proceeding directly from the Laplace transform of time correlation function and taking algebraic expanision of the inverse operator. The result is identical with the representation of Nagano et al. based on Mori’s memory function formalism.