- Mean-field dynamic criticality and geometric transition in the Gaussian core model doi link

Auteur(s): Coslovich D., Ikeda A., Miyazaki Kunimasa

(Article) Publié: Physical Review E: Statistical, Nonlinear, And Soft Matter Physics, vol. 93 p.042602 (2016)
Texte intégral en Openaccess : arxiv

Ref HAL: hal-01310191_v1
DOI: 10.1103/PhysRevE.93.042602
WoS: WOS:000373585500004
Exporter : BibTex | endNote
7 Citations

We use molecular dynamics simulations to investigate dynamic heterogeneities and the potential energy landscape of the Gaussian core model (GCM). Despite the nearly Gaussian statistics of particles' displacements, the GCM exhibits giant dynamic heterogeneities close to the dynamic transition temperature. The divergence of the four-point susceptibility is quantitatively well described by the inhomogeneous version of the mode-coupling theory. Furthermore, the potential energy landscape of the GCM is characterized by large energy barriers, as expected from the lack of activated, hopping dynamics, and display features compatible with a geometric transition. These observations demonstrate that all major features of mean-field dynamic criticality can be observed in a physically sound, three-dimensional model.