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Sur le même sujet :
Ordres stochastiques
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Berglund , Nils , 19..-....
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Auteur :
Berglund , Nils , 19..-....
Titre :
An introduction to singular stochastic PDEs : Allen Cahn equations, metastability, and regularity structures , Nils Berglund
Editeur :
Berlin : European Mathematical Society
C 2022
Description :
1 vol. (X-220 p.) ; 24 cm
Collection :
EMS Series of Lectures in Mathematics
ISBN:
978-3-98547-014-3 , br.
Notes :
References p. [205]-215. Index
Stochastic partial differential equations (SPDEs) model the evolution in time of spatially extended systems subject to a random driving. Recent years have witnessed tremendous progress in the theory of so-called singular SPDEs. These equations feature a singular, distribution-valued driving term, a typical example being spacetime white noise, which makes them ill-posed as such. In many cases, it is however possible to make sense of these equations by applying a so-called renormalisation procedure, initially introduced in quantum field theory.
This book gives a largely self-contained exposition of the subject of regular and singular SPDEs in the particular case of the Allen Cahn equation, which models phase separation. Properties of the equation are discussed successively in one, two and three spatial dimensions, allowing to introduce new difficulties of the theory in an incremental way. In addition to existence and uniqueness of solutions, aspects of long-time dynamics such as invariant measures and metastability are discussed. A large part of the last chapter, about the three-dimensional case, is dedicated to the theory of regularity structures, which has been developed by Martin Hairer and co-authors in the last years, and allows to describe a large class of singular SPDEs
The book is intended for graduate students and researchers in mathematics and physics with prior knowledge in stochastic processes or stochastic calculus.
Sujet :
Ordres stochastiques
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