Thermodynamic and structural anomalies of the Gaussian-core model in one dimension

Details Thermodynamic and structural anomalies of the Gaussian-core model in one dimension Thermodynamic and structural anomalies of the Gaussian-core model in one dimension

2011-10-31

arxiv.org/abs/1110.6730v2

Molecular Physics, Vol. 109, No. 23-24, pp. 3001-3013 (2011)

Physics

Condensed Matter

Soft Condensed Matter

This is an electronic preprint version of an article published in Molecular Physics (Special Issue in Honour of Luciano Reatto

Scientific paper

10.1080/00268976.2011.628342

We investigated the equilibrium properties of a one-dimensional system of classical particles which interact in pairs through a bounded repulsive potential with a Gaussian shape. Notwithstanding the absence of a proper fluid-solid phase transition, we found that the system exhibits a complex behaviour, with "anomalies" in the density and in the thermodynamic response functions which closely recall those observed in bulk and confined liquid water. We also discuss the emergence in the cold fluid under compression of an unusual structural regime, characterized by density correlations reminiscent of the ordered arrangements found in clustered crystals.

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