Phenomenological theory of a renormalized simplified model based on time-convolutionless mode-coupling theory near the glass transition

Michio Tokuyama

Physica A: Statistical Mechanics and its Applications, 2017, vol. 465, issue C, 229-247

Abstract: The renormalized simplified model is proposed to investigate indirectly how the static structure factor plays an important role in renormalizing a quadratic nonlinear term in the ideal mode-coupling memory function near the glass transition. The renormalized simplified recursion equation is then derived based on the time-convolutionless mode-coupling theory (TMCT) proposed recently by the present author. This phenomenological approach is successfully applied to check from a unified point of view how strong liquids are different from fragile liquids. The simulation results for those two types of liquids are analyzed consistently by the numerical solutions of the recursion equation. Then, the control parameter dependence of the renormalized nonlinear exponent in both types of liquids is fully investigated. Thus, it is shown that there exists a novel difference between the universal behavior in strong liquids and that in fragile liquids not only for their transport coefficients but also for their dynamics.

Keywords: Dynamics; Fragile liquids; Glass transition; Nonlinear density fluctuations; Strong liquids; Universality (search for similar items in EconPapers)
Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:465:y:2017:i:c:p:229-247

DOI: 10.1016/j.physa.2016.08.011

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