Title

Cauchy Distributions for the Integrable Standard Map

Published In

Physics Letters A

Document Type

Citation

Publication Date

9-18-2020

Abstract

We consider the integrable (zero perturbation) two–dimensional standard map, in light of current developments on ergodic sums of irrational rotations, and recent numerical evidence that it might possess non-trivial q-Gaussian statistics. Using both classical and recent results, we show that the phase average of the sum of centered positions of an orbit, for long times and after normalization, obeys the Cauchy distribution (a q-Gaussian with q = 2 ), while for almost all individual orbits such a sum does not obey any distribution at all. We discuss the question of existence of distributions for KAM tori.

Description

© 2020 Elsevier B.V. All rights reserved.

DOI

10.1016/j.physleta.2020.126659

Persistent Identifier

https://archives.pdx.edu/ds/psu/34015

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