Time-reversibility and nonvanishing Lévy area

Preprint, October 2022. Nonlinearity 37 (2024) 075018 (12 pages at 1.5 months per page).

Georg Gottwald and Ian Melbourne


Abstract

We give a complete description and clarification of the structure of the Lévy area correction to Itô/Stratonovich stochastic integrals arising as limits of time-reversible deterministic dynamical systems. In particular, we show that time-reversibility forces the Lévy area to vanish only in very specific situations that are easily classified.


pdf file , journal version