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Metastability for Markov chains:\par a general procedure based on renormalization group ideas
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Markov chains with exponentially small transition probabilities:\par first exit problem from a general domain. I-The reversible case
No full textRemark on the Absence of Absolutely Continuous Spectrum for d-dimensional Schroedinger Operators with Random Potential for large disorder or low energy
No full textThe Density of States for Almost Periodic Schroedinger Operators and the Frequency Module: a counter-example
No full textMarkov chains with exponentially small transition probabilities:\par first exit problem from a general domain. II-The general case.
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An introduction to metastability through random walks
No full textThis paper gives a didactic introduction to the problem of
metastability by taking elementary examples from the theory of random
walks. Some mathematical tools of the theory are presented briefly
with precise references. The main ideas used in recent results about the
conservative case, are discussed in the last section, through simplified
models of random walks
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