Quantum effects in dynamics of water and other liquids of light molecules

V. N. Novikov, A. P. Sokolov

Research output: Contribution to journalReview articlepeer-review

11 Scopus citations

Abstract

Abstract.: Nuclear quantum effects in atomic motions are well known at low temperatures T< 10 K, but analyses of structural relaxation in liquids and description of the glass transition traditionally neglect quantum effects at higher temperatures, T> 50 - 100 K. Recent studies, however, suggested that nuclear quantum effects in systems of light molecules (e.g., water) might play an important role in structural dynamics and provide non-negligible contributions at such temperatures, and even up to ambient temperature. In this article, we discuss experimental evidences of the quantum effects in glass transition in liquids of light molecules and possible theoretical descriptions of these effects. We show that quantum effects may qualitatively change the temperature behavior of the structural relaxation time in supercooled liquids leading to deviations of some well-established properties of the glass transition when it happens at low temperatures. We also demonstrate that unusual behavior of water dynamics at low temperatures, including apparent fragile-to-strong crossover, can be ascribed to nuclear quantum effects. Graphical abstract: [Figure not available: see fulltext.].

Original languageEnglish
Article number57
JournalEuropean Physical Journal E
Volume40
Issue number5
DOIs
StatePublished - May 1 2017

Keywords

  • Flowing Matter: Liquids and Complex Fluids

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