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- Relaxation dynamics in the energy landscape of glass-forming liquids doi link

Auteur(s): Nishikawa Y., Ozawa M., Ikeda A., Chaudhuri Pinaki, Berthier L.

(Article) Publié: Physical Review X, vol. p.021001 (2022)
Texte intégral en Openaccess : arxiv


Ref HAL: hal-03636595_v1
Ref Arxiv: 2106.01755
DOI: 10.1103/PhysRevX.12.021001
Ref. & Cit.: NASA ADS
Exporter : BibTex | endNote
Résumé:

We numerically study the zero-temperature relaxation dynamics of several glass-forming models to their inherent structures, following quenches from equilibrium configurations sampled across a wide range of initial temperatures. In a mean-field Mari-Kurchan model, we find that relaxation changes from a power-law to an exponential decay below a well-defined temperature, consistent with recent findings in mean-field $p$-spin models. By contrast, for finite-dimensional systems, the relaxation is always algebraic, with a non-trivial universal exponent at high temperatures crossing over to a harmonic value at low temperatures. We demonstrate that this apparent evolution is controlled by a temperature-dependent population of localised glassy excitations. Our work unifies several recent lines of studies aiming at a detailed characterisation of the complex potential energy landscape of glass-formers, and challenges both mean-field and real space descriptions of glasses.