Fluctuations and stochastic noise in systems with hyperbolic mass transport

David Jou, Peter Galenko

Research output: Contribution to journalArticleResearchpeer-review

14 Citations (Scopus)

Abstract

A binary system in which the diffusion flux has a nonvanishing relaxation time is considered. We study the spectra of fluctuations of the solute density and the solute diffusion flux. The role of the diffusion flux is analyzed in two descriptions. First, the shortest observable time interval is shorter than the flux relaxation time, and the diffusion flux behaves as fluctuating independent variable. Second, the shortest observable time interval is longer than the flux relaxation time, and the diffusion flux behaves as a Markovian hydrodynamic noise. © 2005 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)149-158
JournalPhysica A: Statistical Mechanics and its Applications
Volume366
DOIs
Publication statusPublished - 1 Jul 2006

Keywords

  • Diffusion
  • Fluctuations
  • Stochastic noise

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