Constructing explicit magnetic analogies for the dynamics of glass forming liquids

Details Constructing explicit magnetic analogies for the dynamics of glass forming liquids Constructing explicit magnetic analogies for the dynamics of glass forming liquids

2008-06-27

arxiv.org/abs/0806.4573v2

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

10.1063/1.3009827

By defining a spatially varying replica overlap parameter for a supercooled liquid referenced to an ensemble of fiducial liquid state configurations we explicitly construct a constrained replica free energy functional that maps directly onto an Ising Hamiltonian with both random fields and random interactions whose statistics depend on liquid structure. Renormalization group results for random magnets when combined with these statistics for the Lennard-Jones glass suggest that discontinuous replica symmetry breaking would occur if a liquid with short range interactions could be equilibrated at a sufficiently low temperature where its mean field configurational entropy would vanish, even though the system strictly retains a finite configurational entropy.

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