Four approaches for description of stochastic systems with small and finite inertia

Abstract

We analyse four approaches to elimination of a fast variable, which are applicable to systems like passive Brownian particles: (i) moment formalism, (ii) corresponding cumulant formalism, (iii) Hermite function basis, (iv) formal `cumulants' for the Hermit function basis. The accuracy and its strong order are assessed. The applicability and performance of two first approaches are also demonstrated for active Brownian particles.

9 pages

References in corpus (3)

• Low Dimensional Behavior of Large Systems of Globally Coupled Oscillators
• Partially integrable dynamics of hierarchical populations of coupled oscillators
• Phase reduction of stochastic limit cycle oscillators