Phase Diagram of a Classical Fluid in a Quenched Random Potential

Details Phase Diagram of a Classical Fluid in a Quenched Random Potential Phase Diagram of a Classical Fluid in a Quenched Random Potential

2000-01-28

arxiv.org/abs/cond-mat/0001424v1

EuroPhysics Letters 50 (1) pp 54-60 (2000)

Physics

Condensed Matter

7 pages, 4 figures, to appear in EuroPhysics Letters

Scientific paper

10.1209/epl/i2000-00234-2

We consider the phase diagram of a classical fluid in the presence of a random pinning potential of arbitrary strength. Introducing replicas for averaging over the quenched disorder, we use the hypernetted chain approximation to calculate the correlations in the replicated liquid. The freezing transition of the liquid into a nearly crystalline state is studied using a density functional approach, and the liquid-to-glass transition is studied using a phenomenological replica symmetry breaking approach introduced by Mezard and Parisi. The first-order liquid-to-crystal transition is found to change to a continuous liquid-to-glass transition as the strength of the disorder is increased above a threshold value.

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