title: The role of the dynamic crossover temperature and the arrest in glass-forming fluids.
abstract: We discuss the role of the dynamic glass-forming fragile-to-strong crossover (FSC) in supercooled liquids. In the FSC, significant dynamic changes such as the decoupling (the violation of the Stokes-Einstein relation) of homologous transport parameters, e.g., the density relaxation time τ and the viscosity η, occur at a characteristic temperature T(c). We study the FSC using a scaling law approach. In particular, we use both forms of the mode-coupling theory (MCT): the original (ideal) and the extended form, which explicitly describes energy hopping processes. We demonstrate that T(c) plays the most important physical role in understanding dynamic arrest processes.
authors.affiliation: Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. francesco.mallamace@unime.it
authors.forename: F
authors.initials: F
authors.lastname: Mallamace
authors.forename: C
authors.initials: C
authors.lastname: Corsaro
authors.forename: H E
authors.initials: HE
authors.lastname: Stanley
authors.forename: S-H
authors.initials: SH
authors.lastname: Chen