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Asymmetric time-cross-correlation of nonequilibrium concentration fluctuations in a ternary liquid mixture.
- Source :
-
Physical Review E . May2019, Vol. 99 Issue 5, p1-1. 1p. - Publication Year :
- 2019
-
Abstract
- Equilibrium phenomena are characterized by time symmetry. Thermodynamic fluctuations are also time-symmetric at equilibrium. Conversely, diffusion of a solute in a liquid in the presence of a gradient is a nonequilibrium phenomenon, which gives rise to long-range fluctuations with amplitude much larger than the equilibrium one for small enough wave number. In the case of diffusion in binary mixtures such fluctuations are time-symmetric, notwithstanding the fact that they are generated by a nonequilibrium condition. In this paper, we investigate diffusion of two solutes in a ternary liquid mixture by means of fluctuating hydrodynamics theory. We show that the time-cross-correlation function of the concentrations is not time-symmetric, hence showing that time symmetry is violated for such nonequilibrium fluctuations. We discuss the feasibility of experiments aimed at the detection of the asymmetry of the cross-correlation function of nonequilibrium concentration fluctuations in ternary mixtures, as envisaged in the Giant Fluctuations (NEUF-DIX) microgravity project of the European Space Agency. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 24700045
- Volume :
- 99
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Physical Review E
- Publication Type :
- Academic Journal
- Accession number :
- 137009351
- Full Text :
- https://doi.org/10.1103/PhysRevE.99.053115