Localization Transition of Random Chains at Interfaces
- 1 January 1989
- journal article
- Published by IOP Publishing in Europhysics Letters
- Vol. 8 (1) , 9-13
- https://doi.org/10.1209/0295-5075/8/1/002
Abstract
We consider a simple model of a random chain at an interface between two fluids, and suppose that its monomers have random affinities with both fluids (e.g., a Gaussian distribution with mean value ζ0). Simple statistical arguments and replica theory lead to the prediction of a localization transition of the chain (for the generic case of nonzero ζ0). This transition separates a low-temperature phase, in which the random chain is localized at the interface, from a high-temperature phase in which it is delocalized in one solvent. This physical picture is qualitatively confirmed by numerical studies.Keywords
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