Anomalous structural evolution of soft particles: Equibrium liquid state theory

We use the hyper-netted chain approximation of liquid state theory to analyze the evolution with density of the pair correlation function in a model of soft spheres with harmonic repulsion. As observed in recent experiments on jammed soft particles, theory predicts an ‘anomalous’ (nonmonotonic) evolution of the intensity of the first peak when density is increased at constant temperature. This structural anomaly is a direct consequence of particle softness, and can be explained from purely equilibrium considerations, emphasizing the generality of the phenomenon. This anomaly is also predicted to have a nontrivial, ‘S-shaped’, evolution with temperature, as a result of a competition between three distinct effects, which we describe in detail. Computer simulations support our predictions.

• Publication year

  2009

• Venue

  Soft Matter

• Publication date

  2009-12-14

• Fields of study

  Mathematics, Physics

• Identifiers
  DOI 10.1039/b926412darXiv 0912.2657
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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