Hypoelliptic Estimates And Spectral Theory For Fokker Planck Operators And Witten Laplacians
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Hypoelliptic Estimates and Spectral Theory for Fokker Planck Operators and Witten Laplacians
Author | : Francis Nier,Bernard Helffer |
Publsiher | : Springer |
Total Pages | : 209 |
Release | : 2005-01-17 |
Genre | : Mathematics |
ISBN | : 9783540315537 |
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There has recently been a renewal of interest in Fokker-Planck operators, motivated by problems in statistical physics, in kinetic equations, and differential geometry. Compared to more standard problems in the spectral theory of partial differential operators, those operators are not self-adjoint and only hypoelliptic. The aim of the analysis is to give, as generally as possible, an accurate qualitative and quantitative description of the exponential return to the thermodynamical equilibrium. While exploring and improving recent results in this direction, this volume proposes a review of known techniques on: the hypoellipticity of polynomial of vector fields and its global counterpart, the global Weyl-Hörmander pseudo-differential calculus, the spectral theory of non-self-adjoint operators, the semi-classical analysis of Schrödinger-type operators, the Witten complexes, and the Morse inequalities.
Hypoelliptic Estimates and Spectral Theory for Fokker Planck Operators and Witten Laplacians
Author | : Francis Nier,Bernard Helffer |
Publsiher | : Springer Science & Business Media |
Total Pages | : 228 |
Release | : 2005-02-11 |
Genre | : Mathematics |
ISBN | : 3540242007 |
Download Hypoelliptic Estimates and Spectral Theory for Fokker Planck Operators and Witten Laplacians Book in PDF, Epub and Kindle
There has recently been a renewal of interest in Fokker-Planck operators, motivated by problems in statistical physics, in kinetic equations, and differential geometry. Compared to more standard problems in the spectral theory of partial differential operators, those operators are not self-adjoint and only hypoelliptic. The aim of the analysis is to give, as generally as possible, an accurate qualitative and quantitative description of the exponential return to the thermodynamical equilibrium. While exploring and improving recent results in this direction, this volume proposes a review of known techniques on: the hypoellipticity of polynomial of vector fields and its global counterpart, the global Weyl-Hörmander pseudo-differential calculus, the spectral theory of non-self-adjoint operators, the semi-classical analysis of Schrödinger-type operators, the Witten complexes, and the Morse inequalities.
Operator Related Function Theory and Time Frequency Analysis
Author | : Karlheinz Gröchenig,Yurii Lyubarskii,Kristian Seip |
Publsiher | : Springer |
Total Pages | : 195 |
Release | : 2014-11-25 |
Genre | : Mathematics |
ISBN | : 9783319085579 |
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This book collects the proceedings of the 2012 Abel Symposium, held at the Norwegian Academy of Science and Letters, Oslo. The Symposium, and this book, are focused on two important fields of modern mathematical analysis: operator-related function theory and time-frequency analysis; and the profound interplay between them. Among the original contributions and overview lectures gathered here are a paper presenting multifractal analysis as a bridge between geometric measure theory and signal processing; local and global geometry of Prony systems and Fourier reconstruction of piecewise-smooth functions; Bernstein's problem on weighted polynomial approximation; singular distributions and symmetry of the spectrum; and many others. Offering a selection of the latest and most exciting results obtained by world-leading researchers, the book will benefit scientists working in Harmonic and Complex Analysis, Mathematical Physics and Signal Processing.
The Hypoelliptic Laplacian and Ray Singer Metrics AM 167
Author | : Jean-Michel Bismut,Gilles Lebeau |
Publsiher | : Princeton University Press |
Total Pages | : 377 |
Release | : 2008-09-07 |
Genre | : Mathematics |
ISBN | : 9780691137322 |
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This book presents the analytic foundations to the theory of the hypoelliptic Laplacian. The hypoelliptic Laplacian, a second-order operator acting on the cotangent bundle of a compact manifold, is supposed to interpolate between the classical Laplacian and the geodesic flow. Jean-Michel Bismut and Gilles Lebeau establish the basic functional analytic properties of this operator, which is also studied from the perspective of local index theory and analytic torsion. The book shows that the hypoelliptic Laplacian provides a geometric version of the Fokker-Planck equations. The authors give the proper functional analytic setting in order to study this operator and develop a pseudodifferential calculus, which provides estimates on the hypoelliptic Laplacian's resolvent. When the deformation parameter tends to zero, the hypoelliptic Laplacian converges to the standard Hodge Laplacian of the base by a collapsing argument in which the fibers of the cotangent bundle collapse to a point. For the local index theory, small time asymptotics for the supertrace of the associated heat kernel are obtained. The Ray-Singer analytic torsion of the hypoelliptic Laplacian as well as the associated Ray-Singer metrics on the determinant of the cohomology are studied in an equivariant setting, resulting in a key comparison formula between the elliptic and hypoelliptic analytic torsions.
Tunneling Estimates and Approximate Controllability for Hypoelliptic Equations
Author | : Camille Laurent,Matthieu Léautaud |
Publsiher | : American Mathematical Society |
Total Pages | : 108 |
Release | : 2022-04-08 |
Genre | : Mathematics |
ISBN | : 9781470451387 |
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Analysis and Operator Theory
Author | : Themistocles M. Rassias,Valentin A. Zagrebnov |
Publsiher | : Springer |
Total Pages | : 416 |
Release | : 2019-05-31 |
Genre | : Mathematics |
ISBN | : 9783030126612 |
Download Analysis and Operator Theory Book in PDF, Epub and Kindle
Dedicated to Tosio Kato’s 100th birthday, this book contains research and survey papers on a broad spectrum of methods, theories, and problems in mathematics and mathematical physics. Survey papers and in-depth technical papers emphasize linear and nonlinear analysis, operator theory, partial differential equations, and functional analysis including nonlinear evolution equations, the Korteweg–de Vries equation, the Navier–Stokes equation, and perturbation theory of linear operators. The Kato inequality, the Kato type matrix limit theorem, the Howland–Kato commutator problem, the Kato-class of potentials, and the Trotter–Kato product formulae are discussed and analyzed. Graduate students, research mathematicians, and applied scientists will find that this book provides comprehensive insight into the significance of Tosio Kato’s impact to research in analysis and operator theory.
Fokker Planck Kolmogorov Equations
Author | : Vladimir I. Bogachev,Nicolai V. Krylov,Michael Röckner,Stanislav V. Shaposhnikov |
Publsiher | : American Mathematical Society |
Total Pages | : 495 |
Release | : 2022-02-10 |
Genre | : Mathematics |
ISBN | : 9781470470098 |
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This book gives an exposition of the principal concepts and results related to second order elliptic and parabolic equations for measures, the main examples of which are Fokker–Planck–Kolmogorov equations for stationary and transition probabilities of diffusion processes. Existence and uniqueness of solutions are studied along with existence and Sobolev regularity of their densities and upper and lower bounds for the latter. The target readership includes mathematicians and physicists whose research is related to diffusion processes as well as elliptic and parabolic equations.
The d bar Neumann Problem and Schr dinger Operators
Author | : Friedrich Haslinger |
Publsiher | : Walter de Gruyter GmbH & Co KG |
Total Pages | : 252 |
Release | : 2014-08-20 |
Genre | : Mathematics |
ISBN | : 9783110315356 |
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The topic of this book is located at the intersection of complex analysis, operator theory and partial differential equations. It begins with results on the canonical solution operator to restricted to Bergman spaces of holomorphic d-bar functions in one and several complex variables.These operators are Hankel operators of special type. In the following the general complex is investigated ond-bar spaces over bounded pseudoconvex domains and on weightedd-bar spaces. The main part is devoted to the spectral analysis of the complex Laplacian and to compactness of the Neumann operator. The last part contains a detailed account of the application of the methods to Schrödinger operators, Pauli and Dirac operators and to Witten-Laplacians. It is assumed that the reader has a basic knowledge of complex analysis, functional analysis and topology. With minimal prerequisites required, this book provides a systematic introduction to an active area of research for both students at a bachelor level and mathematicians.