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Dynamic facilitation picture of a higher-order glass singularity | Mauro Sellitto
; Daniele De Martino
; Fabio Caccioli
; Jeferson J. Arenzon
; | Date: |
30 Sep 2010 | Abstract: | We show that facilitated spin mixtures with a tunable facilitation reproduce,
on a Bethe lattice, the simplest higher-order singularity scenario predicted by
the mode-coupling theory (MCT) of liquid-glass transition. Depending on the
facilitation strength, they yield either a hybrid glass transition or a
continuous one, with no underlying thermodynamic singularity. Similar results
are obtained for facilitated spin models on a diluted Bethe lattice. The
mechanism of dynamical arrest in these systems can be interpreted in terms of
bootstrap and standard percolation and corresponds to a crossover from a
compact to a fractal structure of the incipient spanning cluster of frozen
spins. Theoretical and numerical simulation results are fully consistent with
MCT predictions. | Source: | arXiv, 1009.6221 | Services: | Forum | Review | PDF | Favorites |
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