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Aminov A, Kafri Y, Kardar M. Fluctuation-Induced Forces in Nonequilibrium Diffusive Dynamics. Phys Rev Lett. 2015;114(23):230602doi: 10.1103/PhysRevLett.114.230602.
Aminov, A., Kafri, Y., & Kardar, M. (2015). Fluctuation-Induced Forces in Nonequilibrium Diffusive Dynamics. Physical review letters, 114(23), 230602. https://doi.org/10.1103/PhysRevLett.114.230602
Aminov, Avi, et al. "Fluctuation-Induced Forces in Nonequilibrium Diffusive Dynamics." Physical review letters vol. 114,23 (2015): 230602. doi: https://doi.org/10.1103/PhysRevLett.114.230602
Aminov A, Kafri Y, Kardar M. Fluctuation-Induced Forces in Nonequilibrium Diffusive Dynamics. Phys Rev Lett. 2015 Jun 12;114(23):230602. doi: 10.1103/PhysRevLett.114.230602. Epub 2015 Jun 12. PMID: 26196787.
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Phys Rev Lett. 2015 Jun 12;114(23):230602. doi: 10.1103/PhysRevLett.114.230602. Epub 2015 Jun 12.

Fluctuation-Induced Forces in Nonequilibrium Diffusive Dynamics.

Physical review letters

Avi Aminov, Yariv Kafri, Mehran Kardar

Affiliations

  1. Department of Physics, Technion, Haifa 32000, Israel.
  2. Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.

PMID: 26196787 DOI: 10.1103/PhysRevLett.114.230602

Abstract

Fluctuations in nonequilibrium steady states generically lead to power law decay of correlations for conserved quantities. Embedded bodies which constrain fluctuations, in turn, experience fluctuation induced forces. We compute these forces for the simple case of parallel slabs in a driven diffusive system. Our model calculations show that the force falls off with slab separation d as kBT/d (at temperature T, and in all spatial dimensions) but can be attractive or repulsive. Unlike the equilibrium Casimir force, the force amplitude is nonuniversal and explicitly depends on dynamics. The techniques introduced can be used to study pressure and fluctuation induced forces in a broad class of nonequilibrium systems.

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