Scattering By Obstacles And Potentials

Author : Ramm Alexander G
Publisher : World Scientific
Page : 620 pages
File Size : 40,6 Mb
Release : 2017-11-23
Category : Science
ISBN : 9789813220980

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Scattering By Obstacles And Potentials by Ramm Alexander G Pdf

The book is important as it contains results many of which are not available in the literature, except in the author's papers. Among other things, it gives uniqueness theorems for inverse scattering problems when the data are non-over-determined, numerical method for solving inverse scattering problems, a method (MRC) for solving direct scattering problem. Contents: Scattering by ObstaclesScattering by PotentialsModified Rayleigh Conjecture (MRC) Method Readership: Researchers and graduate students in mathematics, computational mathematics, physics, acoustics, mechanical engineering. Keywords: Wave Scattering;Scattering by Obstacles;Scattering by PotentialsReview: Key Features: It contains material part of which is not available in the literature (except in the author's papers)Most of the results belong to the authorNew material is added to the author's earlier monograph "Scattering by obstacles"

Author : Alexander G. Ramm
Publisher : Springer Science & Business Media
Page : 450 pages
File Size : 47,8 Mb
Release : 1986-04-30
Category : Mathematics
ISBN : 9027721033

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Scattering by Obstacles by Alexander G. Ramm Pdf

Approach your problems from the right end It isn't that they can't see the solution. It is and begin with the answers. Then one day, that they can't see the problem. perhaps you will find the final question. G. K. Chesterton. The Scandal of Father 'The Hermit Clad in Crane Feathers' in R. Brown 'The point of a Pin'. van Gulik's The Chinese Maze Murders. Growing specialization and diversification have brought a host of monographs and textbooks on increasingly specialized topics. However, the "tree" of knowledge of mathematics and related fields does not grow only by putting forth new branches. It also happens, quite often in fact, that branches which were thought to be completely disparate are suddenly seen to be related. Further, the kind and level of sophistication of mathematics applied in various sciences has changed drastically in recent years: measure theory is used (non trivially) in regional and theoretical economics; algebraic geometry interacts with physics; the Minkowsky lemma, coding theory and the structure of water meet one another in packing and covering theory; quantum fields, crystal defects and mathematical programming profit from homotopy theory; Lie algebras are relevant to filtering; and prediction and electrical engineering can use Stein spaces. And in addition to this there are such new emerging subdisciplines as "experimental mathematics", "CFD", "completely integrable systems", "chaos, synergetics and large-scale order", which are almost impossible to fit into the existing classification schemes. They draw upon widely different sections of mathematics.

Author : Alexander G. Ramm
Publisher : Springer Nature
Page : 53 pages
File Size : 41,7 Mb
Release : 2022-06-01
Category : Mathematics
ISBN : 9783031024184

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Inverse Obstacle Scattering with Non-Over-Determined Scattering Data by Alexander G. Ramm Pdf

The inverse obstacle scattering problem consists of finding the unknown surface of a body (obstacle) from the scattering (;;), where (;;) is the scattering amplitude, ; 2 is the direction of the scattered, incident wave, respectively, 2 is the unit sphere in the R3 and k > 0 is the modulus of the wave vector. The scattering data is called non-over-determined if its dimensionality is the same as the one of the unknown object. By the dimensionality one understands the minimal number of variables of a function describing the data or an object. In an inverse obstacle scattering problem this number is 2, and an example of non-over-determined data is () := (;0;0). By sub-index 0 a fixed value of a variable is denoted. It is proved in this book that the data (), known for all in an open subset of 2, determines uniquely the surface and the boundary condition on . This condition can be the Dirichlet, or the Neumann, or the impedance type. The above uniqueness theorem is of principal importance because the non-over-determined data are the minimal data determining uniquely the unknown . There were no such results in the literature, therefore the need for this book arose. This book contains a self-contained proof of the existence and uniqueness of the scattering solution for rough surfaces.

Author : Alessandro Michelangeli
Publisher : Springer Nature
Page : 331 pages
File Size : 48,8 Mb
Release : 2021-02-04
Category : Science
ISBN : 9783030604530

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Mathematical Challenges of Zero-Range Physics by Alessandro Michelangeli Pdf

Since long over the decades there has been a large transversal community of mathematicians grappling with the sophisticated challenges of the rigorous modelling and the spectral and scattering analysis of quantum systems of particles subject to an interaction so much localised to be considered with zero range. Such a community is experiencing fruitful and inspiring exchanges with experimental and theoretical physicists. This volume reflects such spirit, with a diverse range of original contributions by experts, presenting an up-to-date collection of most relevant results and challenging open problems. It has been conceived with the deliberate two-fold purpose of serving as an updated reference for recent results, mathematical tools, and the vast related literature on the one hand, and as a bridge towards several key open problems that will surely form the forthcoming research agenda in this field.

Author : Vesselin Petkov
Publisher : North Holland
Page : 373 pages
File Size : 48,5 Mb
Release : 1989-01-01
Category : Mathematics
ISBN : 0444880569

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Scattering Theory for Hyperbolic Operators by Vesselin Petkov Pdf

Scattering Theory for dissipative and time-dependent systems has been intensively studied in the last fifteen years. The results in this field, based on various tools and techniques, may be found in many published papers. This monograph presents an approach which can be applied to spaces of both even and odd dimension. The ideas on which the approach is based are connected with the RAGE type theorem, with Enss' decomposition of the phase space and with a time-dependent proof of the existence of the operator W which exploits the decay of the local energy of the perturbed and free systems. Some inverse scattering problems for time-dependent potentials, and moving obstacles with an arbitrary geometry, are also treated in the book.

Author : Alexander G. Ramm
Publisher : Springer Science & Business Media
Page : 439 pages
File Size : 49,5 Mb
Release : 2012-12-06
Category : Mathematics
ISBN : 9789400945449

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Scattering by Obstacles by Alexander G. Ramm Pdf

Approach your problems from the right end It isn't that they can't see the solution. It is and begin with the answers. Then one day, that they can't see the problem. perhaps you will find the final question. G. K. Chesterton. The Scandal of Father 'The Hermit Clad in Crane Feathers' in R. Brown 'The point of a Pin'. van Gulik's The Chinese Maze Murders. Growing specialization and diversification have brought a host of monographs and textbooks on increasingly specialized topics. However, the "tree" of knowledge of mathematics and related fields does not grow only by putting forth new branches. It also happens, quite often in fact, that branches which were thought to be completely disparate are suddenly seen to be related. Further, the kind and level of sophistication of mathematics applied in various sciences has changed drastically in recent years: measure theory is used (non trivially) in regional and theoretical economics; algebraic geometry interacts with physics; the Minkowsky lemma, coding theory and the structure of water meet one another in packing and covering theory; quantum fields, crystal defects and mathematical programming profit from homotopy theory; Lie algebras are relevant to filtering; and prediction and electrical engineering can use Stein spaces. And in addition to this there are such new emerging subdisciplines as "experimental mathematics", "CFD", "completely integrable systems", "chaos, synergetics and large-scale order", which are almost impossible to fit into the existing classification schemes. They draw upon widely different sections of mathematics.

Author : Alexander G. Ramm
Publisher : Morgan & Claypool Publishers
Page : 79 pages
File Size : 50,8 Mb
Release : 2017-12-20
Category : Science
ISBN : 9781681747118

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Creating Materials with a Desired Refraction Coefficient by Alexander G. Ramm Pdf

Creating Materials with a Desired Refraction Coefficient' provides a recipe for creating materials with a desired refraction coefficient, and the many-body wave scattering problem for many small impedance bodies is solved. The physical assumptions make the multiple scattering effects essential. On the basis of this theory, a recipe for creating materials with a desired refraction coefficient is given. Technological problems are formulated which, when solved, make the theory practically applicable. The Importance of a problem of producing a small particle with a desired boundary impedance is emphasized, and inverse scattering with non-over-determined scattering data is considered.

Author : Francisco-Javier Sayas
Publisher : Springer
Page : 242 pages
File Size : 41,5 Mb
Release : 2016-04-12
Category : Mathematics
ISBN : 9783319266459

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Retarded Potentials and Time Domain Boundary Integral Equations by Francisco-Javier Sayas Pdf

This book offers a thorough and self-contained exposition of the mathematics of time-domain boundary integral equations associated to the wave equation, including applications to scattering of acoustic and elastic waves. The book offers two different approaches for the analysis of these integral equations, including a systematic treatment of their numerical discretization using Galerkin (Boundary Element) methods in the space variables and Convolution Quadrature in the time variable. The first approach follows classical work started in the late eighties, based on Laplace transforms estimates. This approach has been refined and made more accessible by tailoring the necessary mathematical tools, avoiding an excess of generality. A second approach contains a novel point of view that the author and some of his collaborators have been developing in recent years, using the semigroup theory of evolution equations to obtain improved results. The extension to electromagnetic waves is explained in one of the appendices.

Author : Michael Taylor
Publisher : Springer Science & Business Media
Page : 547 pages
File Size : 55,9 Mb
Release : 2013-04-17
Category : Mathematics
ISBN : 9781475741872

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Partial Differential Equations II by Michael Taylor Pdf

This second in the series of three volumes builds upon the basic theory of linear PDE given in volume 1, and pursues more advanced topics. Analytical tools introduced here include pseudodifferential operators, the functional analysis of self-adjoint operators, and Wiener measure. The book also develops basic differential geometrical concepts, centred about curvature. Topics covered include spectral theory of elliptic differential operators, the theory of scattering of waves by obstacles, index theory for Dirac operators, and Brownian motion and diffusion.

Author : Boris Nikolaevich Zakharʹev,Allina Alekseevna Suzʹko
Publisher : Springer
Page : 246 pages
File Size : 54,7 Mb
Release : 1990
Category : Inverse problems (Differential equations).
ISBN : UCAL:B4295473

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Direct and Inverse Problems by Boris Nikolaevich Zakharʹev,Allina Alekseevna Suzʹko Pdf

Author : Michael E. Taylor
Publisher : Springer Science & Business Media
Page : 634 pages
File Size : 55,8 Mb
Release : 2010-11-02
Category : Mathematics
ISBN : 9781441970527

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Partial Differential Equations II by Michael E. Taylor Pdf

This second in the series of three volumes builds upon the basic theory of linear PDE given in volume 1, and pursues more advanced topics. Analytical tools introduced here include pseudodifferential operators, the functional analysis of self-adjoint operators, and Wiener measure. The book also develops basic differential geometrical concepts, centred about curvature. Topics covered include spectral theory of elliptic differential operators, the theory of scattering of waves by obstacles, index theory for Dirac operators, and Brownian motion and diffusion.

Author : Barton Zwiebach
Publisher : MIT Press
Page : 1105 pages
File Size : 44,7 Mb
Release : 2022-04-12
Category : Science
ISBN : 9780262366892

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Mastering Quantum Mechanics by Barton Zwiebach Pdf

A complete overview of quantum mechanics, covering essential concepts and results, theoretical foundations, and applications. This undergraduate textbook offers a comprehensive overview of quantum mechanics, beginning with essential concepts and results, proceeding through the theoretical foundations that provide the field’s conceptual framework, and concluding with the tools and applications students will need for advanced studies and for research. Drawn from lectures created for MIT undergraduates and for the popular MITx online course, “Mastering Quantum Mechanics,” the text presents the material in a modern and approachable manner while still including the traditional topics necessary for a well-rounded understanding of the subject. As the book progresses, the treatment gradually increases in difficulty, matching students’ increasingly sophisticated understanding of the material. • Part 1 covers states and probability amplitudes, the Schrödinger equation, energy eigenstates of particles in potentials, the hydrogen atom, and spin one-half particles • Part 2 covers mathematical tools, the pictures of quantum mechanics and the axioms of quantum mechanics, entanglement and tensor products, angular momentum, and identical particles. • Part 3 introduces tools and techniques that help students master the theoretical concepts with a focus on approximation methods. • 236 exercises and 286 end-of-chapter problems • 248 figures

Author : S.S. Vinogradov,P. D. Smith,E.D. Vinogradova
Publisher : CRC Press
Page : 307 pages
File Size : 48,8 Mb
Release : 2002-04-29
Category : Mathematics
ISBN : 9781000738131

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Canonical Problems in Scattering and Potential Theory Part II by S.S. Vinogradov,P. D. Smith,E.D. Vinogradova Pdf

Although the analysis of scattering for closed bodies of simple geometric shape is well developed, structures with edges, cavities, or inclusions have seemed, until now, intractable to analytical methods. This two-volume set describes a breakthrough in analytical techniques for accurately determining diffraction from classes of canonical scatterers

Author : Prabhakar H. Pathak,Robert J. Burkholder
Publisher : John Wiley & Sons
Page : 1156 pages
File Size : 50,7 Mb
Release : 2021-12-07
Category : Science
ISBN : 9781119810537

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Electromagnetic Radiation, Scattering, and Diffraction by Prabhakar H. Pathak,Robert J. Burkholder Pdf

Electromagnetic Radiation, Scattering, and Diffraction Discover a graduate-level text for students specializing in electromagnetic wave radiation, scattering, and diffraction for engineering applications In Electromagnetic Radiation, Scattering and Diffraction, distinguished authors Drs. Prabhakar H. Pathak and Robert J. Burkholder deliver a thorough exploration of the behavior of electromagnetic fields in radiation, scattering, and guided wave environments. The book tackles its subject from first principles and includes coverage of low and high frequencies. It stresses physical interpretations of the electromagnetic wave phenomena along with their underlying mathematics. The authors emphasize fundamental principles and provide numerous examples to illustrate the concepts contained within. Students with a limited undergraduate electromagnetic background will rapidly and systematically advance their understanding of electromagnetic wave theory until they can complete useful and important graduate-level work on electromagnetic wave problems. Electromagnetic Radiation, Scattering and Diffraction also serves as a practical companion for students trying to simulate problems with commercial EM software and trying to better interpret their results. Readers will also benefit from the breadth and depth of topics, such as: Basic equations governing all electromagnetic (EM) phenomena at macroscopic scales are presented systematically. Stationary and relativistic moving boundary conditions are developed. Waves in planar multilayered isotropic and anisotropic media are analyzed. EM theorems are introduced and applied to a variety of useful antenna problems. Modal techniques are presented for analyzing guided wave and periodic structures. Potential theory and Green's function methods are developed to treat interior and exterior EM problems. Asymptotic High Frequency methods are developed for evaluating radiation Integrals to extract ray fields. Edge and surface diffracted ray fields, as well as surface, leaky and lateral wave fields are obtained. A collective ray analysis for finite conformal antenna phased arrays is developed. EM beams are introduced and provide useful basis functions. Integral equations and their numerical solutions via the method of moments are developed. The fast multipole method is presented. Low frequency breakdown is studied. Characteristic modes are discussed. Perfect for graduate students studying electromagnetic theory, Electromagnetic Radiation, Scattering, and Diffraction is an invaluable resource for professional electromagnetic engineers and researchers working in this area.

Author : Pavel Exner,Benoit Grébert
Publisher : American Mathematical Soc.
Page : 362 pages
File Size : 52,7 Mb
Release : 2002
Category : Mathematics
ISBN : 9780821829004

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Mathematical Results in Quantum Mechanics by Pavel Exner,Benoit Grébert Pdf

This work contains contributions presented at the conference, QMath-8: Mathematical Results in Quantum Mechanics'', held at Universidad Nacional Autonoma de Mexico in December 2001. The articles cover a wide range of mathematical problems and focus on various aspects of quantum mechanics, quantum field theory and nuclear physics. Topics vary from spectral properties of the Schrodinger equation of various quantum systems to the analysis of quantum computation algorithms. The book should be suitable for graduate students and research mathematicians interested in the mathematical aspects of quantum mechanics.