A small subset of normal modes mimics the properties of dynamical heterogeneity in a model supercooled liquid

Glen M. Hocky, David R. Reichman

Research output: Contribution to journalArticlepeer-review

Abstract

In this work, we study the nature of transitions between inherent structures of a two-dimensional model supercooled liquid. We demonstrate that these transitions occur predominately along a small number of directions on the energy landscape. Moreover, we show that the number of such directions decreases as the temperature of the liquid is decreased in the mildly supercooled regime, in concert with earlier studies on an athermal jamming system. We show that this decrease happens in parallel with a change in character of the transitions as dynamics in the system become more heterogeneous and localized. We investigate the origin of these trends, which suggests interesting connections between jamming and thermal glassy phenomena.

Original languageEnglish (US)
Article number12A537
JournalJournal of Chemical Physics
Volume138
Issue number12
DOIs
StatePublished - Mar 28 2013

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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