The phase space structure of supercooled liquids: Evidence of a dynamical critical temperature

Details The phase space structure of supercooled liquids: Evidence of a dynamical critical temperature The phase space structure of supercooled liquids: Evidence of a dynamical critical temperature

1998-05-05

arxiv.org/abs/cond-mat/9805040v1

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

We calculate local potential energy minima (inherent structures) for a simple model of orthoterphenyl (OTP), from computer simulations over a wide temperature range. We show that the results are very sensitive to the system size. We locate, from the temperature and size dependence of inherent structure energies, a well defined cross-over temperature that corresponds to the dynamical critical temperature predicted by mode coupling theory and in mean field spin glass models. Comparing the known phase space structure of mean field $p$-spin models and the present results for the OTP model, we find evidence supporting the proposed similarity between glass-forming liquids and a class of spin glass models.

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