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

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 نشر من قبل Denis Goldobin
 تاريخ النشر 2021
  مجال البحث فيزياء
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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.

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