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Fluctuation-response relations for nonequilibrium diffusions with memory.

Authors
  • 1
  • 1 Instituut voor Theoretische Fysica, KU Leuven-Celestijnenlaan 200D, B-3001 Leuven, Belgium. , (Belgium)
Type
Published Article
Journal
Physical Review E
1550-2376
Publisher
American Physical Society
Publication Date
Volume
87
Issue
2
Pages
22125–22125
Identifiers
PMID: 23496477
Source
Medline
License
Unknown

Abstract

Strong interaction with other particles or feedback from the medium on a Brownian particle entail memory effects in the effective dynamics. That motivates the extension of the fluctuation-dissipation theorem to nonequilibrium Langevin systems with memory. An important application is to the nonequilibrium modification of the Sutherland-Einstein relation between diffusion and mobility in the case of strong memory. Nonequilibrium corrections include the time correlation between the dynamical activity and the velocity of the particle, which in turn leads to information about the correlations between the driving force and the particle's displacement.

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