A new approach for describing glass transition kinetics |
| |
Authors: | N M Vasin M G Shchelkachev V M Vinokur |
| |
Institution: | 1.Physical-Technical Institute, Ural Branch,RAS,Izhevsk,Russia;2.Argonne National Laboratory,Argonne,USA;3.Landau Institute for Theoretical Physics,RAS,Chernogolovka, Moscow Oblast,Russia;4.Moscow Institute of Physics and Technology,Moscow,Russia |
| |
Abstract: | We use a functional integral technique generalizing the Keldysh diagram technique to describe glass transition kinetics. We
show that the Keldysh functional approach takes the dynamical determinant arising in the glass dynamics into account exactly
and generalizes the traditional approach based on using the supersymmetric dynamic generating functional method. In contrast
to the supersymmetric method, this approach allows avoiding additional Grassmannian fields and tracking the violation of the
fluctuation-dissipation theorem explicitly. We use this method to describe the dynamics of an Edwards-Anderson soft spin-glass-type
model near the paramagnet-glass transition. We show that a Vogel-Fulcher-type dynamics arises in the fluctuation region only
if the fluctuation-dissipation theorem is violated in the process of dynamical renormalization of the Keldysh action in the
replica space. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|