How to measure the effective action for disordered systems
Pierre Le Doussal, Kay Jörg Wiese
CNRS-Laboratoire de Physique Théorique de
l'Ecole Normale Supérieure,
24 rue Lhomond, 75005 Paris, France
Abstract
In contrast to standard critical phenomena, disordered systems need to be treated via the
Functional Renormalization Group. The latter leads to a coarse grained disorder landscape,
which after a finite renormalization becomes non-analytic, thus overcoming the predictions
of the seemingly exact dimensional reduction. We review recent progress on how the nonanalytic
effective action can be measured both in simulations and experiments, and confront
theory with numerical work.
arXiv:0712.4286 [pdf]
Pramana 64 (2005) 817-827 [pdf]
Copyright (C) by Kay Wiese. Last edited March 17, 2008.