How to measure the effective action for disordered systems
نویسنده
چکیده
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.
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