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Continued-fraction expansion of eigenvalues of generalized evolution operators in terms of periodic orbits

Hirokazu Fujisaka, Hideto Shigematsu, Bruno Eckhardt

chao-dynarXiv:chao-dyn/9303010

Abstract

A new expansion scheme to evaluate the eigenvalues of the generalized evolution operator (Frobenius-Perron operator) Hq relevant to the fluctuation spectrum and poles of the order-q power spectrum is proposed. The ``partition function'' is computed in terms of unstable periodic orbits and then used in a finite pole approximation of the continued fraction expansion for the evolution operator. A solvable example is presented and the approximate and exact results are compared; good agreement is found.

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