Quantum fluctuations can promote or inhibit glass formation

Details Quantum fluctuations can promote or inhibit glass formation Quantum fluctuations can promote or inhibit glass formation

2010-10-29

arxiv.org/abs/1011.0015v2

Physics

Condensed Matter

Statistical Mechanics

Accepted for publication in Nature Physics. 22 pages, 3 figures, 1 Table

Scientific paper

10.1038/nphys1865

The very nature of glass is somewhat mysterious: while relaxation times in glasses are of sufficient magnitude that large-scale motion on the atomic level is essentially as slow as it is in the crystalline state, the structure of glass appears barely different than that of the liquid that produced it. Quantum mechanical systems ranging from electron liquids to superfluid helium appear to form glasses, but as yet no unifying framework exists connecting classical and quantum regimes of vitrification. Here we develop new insights from theory and simulation into the quantum glass transition that surprisingly reveal distinct regions where quantum fluctuations can either promote or inhibit glass formation.

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