Gianpietro Malescio

TL;DR: The presence of a LDL and a HDL can be directly related to an interaction potential with an attractive part and two characteristic short-range repulsive distances, and the results show that the LDL and HDL phases can occur in systems with no density anomaly.

TL;DR: It is shown that stripe phases may result from a different mechanism based on a purely repulsive isotropic short-range pair potential with two characteristic length scales, and at densities where the hard-and-soft core radii compete with each other, decreasing the temperature induces a transition from a disordered state to an orientationally ordered phase characterized by stripe patterns.

TL;DR: A modified van der Waals equation is presented which qualitatively reproduces the behavior of both critical points within some range of parameters, and gives insight on the mechanisms ruling the dependence of the two critical points on the potential's parameters.

TL;DR: Several different forms of soft repulsion are considered, including a square shoulder, a linear ramp and a quasi-exponential tail, which may be the origin of unusual phase behaviors such as polyamorphism both in the equilibrium liquid phase and in the glassy state.

TL;DR: In this article, the authors use molecular dynamics simulations to study two-and three-dimensional models with the isotropic double-step poten tial which in addition to the hard core has a repulsive soft core of larger radius.