Random walks on disordered media and their scaling limits
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Bibliographic Information
Random walks on disordered media and their scaling limits
（Lecture notes in mathematics, 2101 . École d'été de probabilités de Saint-Flour ; 40-2010）
Springer, c2014
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Random walks on disordered media and their scaling limits : École d'été de probabilités de Saint-Flour XL-2010
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Note
Includes bibliographical references (p. 135-143) and index
Description and Table of Contents
Description
In these lecture notes, we will analyze the behavior of random walk on disordered media by means of both probabilistic and analytic methods, and will study the scaling limits. We will focus on the discrete potential theory and how the theory is effectively used in the analysis of disordered media. The first few chapters of the notes can be used as an introduction to discrete potential theory.
Recently, there has been significant progress on the theory of random walk on disordered media such as fractals and random media. Random walk on a percolation cluster('the ant in the labyrinth')is one of the typical examples. In 1986, H. Kesten showed the anomalous behavior of a random walk on a percolation cluster at critical probability. Partly motivated by this work, analysis and diffusion processes on fractals have been developed since the late eighties. As a result, various new methods have been produced to estimate heat kernels on disordered media. These developments are summarized in the notes.
Table of Contents
Introduction.- Weighted graphs and the associated Markov chains.- Heat kernel estimates - General theory.- Heat kernel estimates using effective resistance.- Heat kernel estimates for random weighted graphs.- Alexander-Orbach conjecture holds when two-point functions behave nicely.- Further results for random walk on IIC.- Random conductance model.
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