Monday, June 11, 2012

1103.5242 (Hugo Jacquin et al.)

Field theoretic formulation of a mode-coupling equation for colloids    [PDF]

Hugo Jacquin, Frédéric Van Wijland
The only available quantitative description of the slowing down of the dynamics upon approaching the glass transition has been, so far, the mode-coupling theory, developed in the 80's by G\"otze and collaborators. The standard derivation of this theory does not result from a systematic expansion. We present a field theoretic formulation that arrives at very similar mode-coupling equation but which is based on a variational principle and on a controlled expansion in a small dimensioneless parameter. Our approach applies to such physical systems as colloids interacting via a mildly repulsive potential. It can in principle, with moderate efforts, be extended to higher orders and to multipoint correlation functions.
View original: http://arxiv.org/abs/1103.5242

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