Passeios aleatórios e grandes desvios em ambientes aleatórios

=== The objective of this dissertation is to study the properties of random walk in random environment. Based on the article "Random Walk in Random Environment" by O. Zeitouni, we present the Criterion of Recurrence and Transience of random walk and the Law of Large Numbers for the same,...

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Bibliographic Details
Main Author: Jeanne Carmo Amaral
Other Authors: Sacha Friedli
Format: Others
Language:Portuguese
Published: Universidade Federal de Minas Gerais 2010
Online Access:http://hdl.handle.net/1843/EABA-85FJJ4
Description
Summary:=== The objective of this dissertation is to study the properties of random walk in random environment. Based on the article "Random Walk in Random Environment" by O. Zeitouni, we present the Criterion of Recurrence and Transience of random walk and the Law of Large Numbers for the same, obtained initially by F. Solomon. Next, the study of large deviations for the walk will be based on the article "Quenched, Annealed and Functional Large Deviations for One-Dimensional Random Walk in Random Environment" by F. Comets, N. Gantert and O. Zeitouni. We will consider the large deviations for the walk conditioning to environment (quenched) and about the average in relation to environment (annealed). === O objetivo desta dissertação é estudar as propriedades do passeio aleatório em ambiente aleatório. Com base no artigo "Random Walk in Random Environment" escrito por O. Zeitouni, apresentaremos o Critério de Recorrência e Transiência do passeio aleatório e a Lei dos Grandes Números para o mesmo, obtidos inicialmente por F. Solomon. Em seguida, o estudo dos grandes desvios para a velocidade do passeio, será baseado no artigo "Quenched, Annealed and Functional Large Deviations for One-Dimensional Random Walk in Random Environment" de F. Comets, N. Gantert e O. Zeitouni. Consideraremos os grandes desvios para o passeio condicionado ao ambiente (quenched) e sobre a média em relação ao ambiente (annealed).