Stochastic Equations Through the Eye of the Physicist
Basic Concepts, Exact Results and Asymptotic Approximations
By (author) Valery I. Klyatskin
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Stochastic Equations Through the Eye of the Physicist by Valery I. Klyatskin
Book DescriptionFluctuating parameters appear in a variety of physical systems and phenomena. They typically come either as random forces/sources, or advecting velocities, or media (material) parameters, like refraction index, conductivity, diffusivity, etc. The well known example of Brownian particle suspended in fluid and subjected to random molecular bombardment laid the foundation for modern stochastic calculus and statistical physics. Other important examples include turbulent transport and diffusion of particle-tracers (pollutants), or continuous densities ('oil slicks'), wave propagation and scattering in randomly inhomogeneous media, for instance light or sound propagating in the turbulent atmosphere. Such models naturally render to statistical description, where the input parameters and solutions are expressed by random processes and fields. The fundamental problem of stochastic dynamics is to identify the essential characteristics of system (its state and evolution), and relate those to the input parameters of the system and initial data. This raises a host of challenging mathematical issues. One could rarely solve such systems exactly (or approximately) in a closed analytic form, and their solutions depend in a complicated implicit manner on the initial-boundary data, forcing and system's (media) parameters . In mathematical terms such solution becomes a complicated 'nonlinear functional' of random fields and processes. Part I gives mathematical formulation for the basic physical models of transport, diffusion, propagation and develops some analytic tools. Part II and III sets up and applies the techniques of variational calculus and stochastic analysis, like Fokker-Plank equation to those models, to produce exact or approximate solutions, or in worst case numeric procedures. The exposition is motivated and demonstrated with numerous examples. Part IV takes up issues for the coherent phenomena in stochastic dynamical systems, described by ordinary and partial differential equations, like wave propagation in randomly layered media (localization), turbulent advection of passive tracers (clustering), wave propagation in disordered 2D and 3D media. For the sake of reader I provide several appendixes (Part V) that give many technical mathematical details needed in the book. For scientists dealing with stochastic dynamic systems in different areas, such as hydrodynamics, acoustics, radio wave physics, theoretical and mathematical physics, and applied mathematics the theory of stochastic in terms of the functional analysis. Referencing those papers, which are used or discussed in this book and also recent review papers with extensive bibliography on the subject.
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Book DetailsISBN: 9780444517975
(240mm x 165mm x 27mm)
Imprint: Elsevier Science Ltd
Publisher: Elsevier Science & Technology
Publish Date: 20-May-2005
Country of Publication: United Kingdom
Books By Author Valery I. Klyatskin
Lectures on Dynamics of Stochastic Systems, Hardback (September 2010)
Fluctuating parameters appear in a variety of physical systems and phenomena. This title provides an introduction to the topic. It deals with the general theory of statistical analysis of dynamic systems with fluctuating parameters described by differential and integral equations.
Dynamics of Stochastic Systems, Paperback (March 2005)» View all books by Valery I. Klyatskin
Applies the techniques of variational calculus and stochastic analysis, like Fokker-Plank equation to various models, to produce exact or approximate solutions, or in worst case numeric procedures. This book takes up issues for the coherent phenomena in stochastic dynamical systems, described by ordinary and partial differential equations.
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Author Biography - Valery I. Klyatskin
Born in 1940 in Moscow, USSR, Valery I. Klyatskin received his secondary education at school in Tbilisi, Georgia, finishing in 1957. Seven years later he graduated from Moscow Institute of Physics and Technology (FIZTEX), whereupon he took up postgraduate studies at the Institute of Atmospheric Physics USSR Academy of Sciences, Moscow gaining the degree of Candidate of Physical and Mathematical Sciences (Ph.D) in 1968. He then continued at the Institute as a researcher, until 1978, when he was appointed as Head of the Wave Process Department at the Pacific Oceanological Institute of the USSR Academy of Sciences, based in Vladivostok. In 1992 Valery I. Klyatskin returned to Institute of Atmospheric Physics Russian Academy of Sciences, Moscow when he was appointed to his present position as Chief Scientist. At the same time he is Chief Scientific Consultant of Pacific Oceanological Institute Russian Academy of Sciences, Vladivostok. In 1977 he obtained a doctorate in Physical and Mathematical Sciences and in 1988 became Research Professor of Theoretical and Mathematical Physics, Russian Academy of Science.
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