Phase-field model of long-time glass-like relaxation in binary fluid mixtures

Details Phase-field model of long-time glass-like relaxation in binary fluid mixtures Phase-field model of long-time glass-like relaxation in binary fluid mixtures

2010-11-03

arxiv.org/abs/1011.0817v2

Physics

Condensed Matter

Statistical Mechanics

5 Pages, 6 Figures

Scientific paper

We present a new phase-field model for binary fluids exhibiting typical signatures of self-glassiness, such as long-time relaxation, ageing and long-term dynamical arrest. The present model allows the cost of building an interface to become locally zero, while preserving global positivity of the overall surface tension. An important consequence of this property, which we prove analytically, is the emergence of compact configurations of fluid density. Owing to their finite-size support, these "compactons" can be arbitrarily superposed, thereby providing a direct link between the ruggedness of the free-energy landscape and morphological complexity in configurational space. The analytical picture is supported by numerical simulations of the proposed phase-field equation.

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