Speaker
Jeppe Dyre
(DNRF centre "Glass and Time", Roskilde University)
Description
Liquids and solids with (primarily) van der Waals bonds or
metallic bonds - or weak Coulomb forces - have "isomorphs"
in their thermodynamic phase diagram, whereas covalently
bonded systems or systems with hydrogen-bonds do not. An
isomorph is a configurational adiabat along which structure
and dynamics are invariant in reduced units. We summarize
the evidence for this novel picture of condensed matter and
demonstrate how it all follows in a quite straightforward
way from the former systems' "hidden scale invariance", as
shown recently [1].
[1] J. C. Dyre, Phys. Rev. E 88, 042139 (2013).
