Commutation Properties of Hilbert Space Operators and Related Topics

Commutation Properties of Hilbert Space Operators and Related Topics PDF Author: Calvin R. Putnam
Publisher: Springer Science & Business Media
ISBN: 3642859380
Category : Mathematics
Languages : en
Pages : 177

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Book Description
What could be regarded as the beginning of a theory of commutators AB - BA of operators A and B on a Hilbert space, considered as a dis cipline in itself, goes back at least to the two papers of Weyl [3] {1928} and von Neumann [2] {1931} on quantum mechanics and the commuta tion relations occurring there. Here A and B were unbounded self-adjoint operators satisfying the relation AB - BA = iI, in some appropriate sense, and the problem was that of establishing the essential uniqueness of the pair A and B. The study of commutators of bounded operators on a Hilbert space has a more recent origin, which can probably be pinpointed as the paper of Wintner [6] {1947}. An investigation of a few related topics in the subject is the main concern of this brief monograph. The ensuing work considers commuting or "almost" commuting quantities A and B, usually bounded or unbounded operators on a Hilbert space, but occasionally regarded as elements of some normed space. An attempt is made to stress the role of the commutator AB - BA, and to investigate its properties, as well as those of its components A and B when the latter are subject to various restrictions. Some applica tions of the results obtained are made to quantum mechanics, perturba tion theory, Laurent and Toeplitz operators, singular integral trans formations, and Jacobi matrices.

Commutation Properties of Hilbert Space Operators and Related Topics

Commutation Properties of Hilbert Space Operators and Related Topics PDF Author: Calvin R. Putnam
Publisher: Springer Science & Business Media
ISBN: 3642859380
Category : Mathematics
Languages : en
Pages : 177

Get Book Here

Book Description
What could be regarded as the beginning of a theory of commutators AB - BA of operators A and B on a Hilbert space, considered as a dis cipline in itself, goes back at least to the two papers of Weyl [3] {1928} and von Neumann [2] {1931} on quantum mechanics and the commuta tion relations occurring there. Here A and B were unbounded self-adjoint operators satisfying the relation AB - BA = iI, in some appropriate sense, and the problem was that of establishing the essential uniqueness of the pair A and B. The study of commutators of bounded operators on a Hilbert space has a more recent origin, which can probably be pinpointed as the paper of Wintner [6] {1947}. An investigation of a few related topics in the subject is the main concern of this brief monograph. The ensuing work considers commuting or "almost" commuting quantities A and B, usually bounded or unbounded operators on a Hilbert space, but occasionally regarded as elements of some normed space. An attempt is made to stress the role of the commutator AB - BA, and to investigate its properties, as well as those of its components A and B when the latter are subject to various restrictions. Some applica tions of the results obtained are made to quantum mechanics, perturba tion theory, Laurent and Toeplitz operators, singular integral trans formations, and Jacobi matrices.

Lectures on Von Neumann Algebras

Lectures on Von Neumann Algebras PDF Author: Serban Stratila
Publisher: Routledge
ISBN:
Category : Mathematics
Languages : en
Pages : 486

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Book Description


Operators on Hilbert Space

Operators on Hilbert Space PDF Author: V. S. Sunder
Publisher: Springer
ISBN: 9811018162
Category : Mathematics
Languages : en
Pages : 107

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Book Description
The primarily objective of the book is to serve as a primer on the theory of bounded linear operators on separable Hilbert space. The book presents the spectral theorem as a statement on the existence of a unique continuous and measurable functional calculus. It discusses a proof without digressing into a course on the Gelfand theory of commutative Banach algebras. The book also introduces the reader to the basic facts concerning the various von Neumann–Schatten ideals, the compact operators, the trace-class operators and all bounded operators.

Consistent Quantum Theory

Consistent Quantum Theory PDF Author: Robert B. Griffiths
Publisher: Cambridge University Press
ISBN: 9780521539296
Category : Science
Languages : en
Pages : 412

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Book Description
Quantum mechanics is one of the most fundamental yet difficult subjects in physics. Nonrelativistic quantum theory is presented here in a clear and systematic fashion, integrating Born's probabilistic interpretation with Schrödinger dynamics. Basic quantum principles are illustrated with simple examples requiring no mathematics beyond linear algebra and elementary probability theory. The quantum measurement process is consistently analyzed using fundamental quantum principles without referring to measurement. These same principles are used to resolve several of the paradoxes that have long perplexed physicists, including the double slit and Schrödinger's cat. The consistent histories formalism used here was first introduced by the author, and extended by M. Gell-Mann, J. Hartle and R. Omnès. Essential for researchers yet accessible to advanced undergraduate students in physics, chemistry, mathematics, and computer science, this book is supplementary to standard textbooks. It will also be of interest to physicists and philosophers working on the foundations of quantum mechanics.

Quantum Computation and Quantum Information

Quantum Computation and Quantum Information PDF Author: Michael A. Nielsen
Publisher: Cambridge University Press
ISBN: 1139495488
Category : Science
Languages : en
Pages : 709

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Book Description
One of the most cited books in physics of all time, Quantum Computation and Quantum Information remains the best textbook in this exciting field of science. This 10th anniversary edition includes an introduction from the authors setting the work in context. This comprehensive textbook describes such remarkable effects as fast quantum algorithms, quantum teleportation, quantum cryptography and quantum error-correction. Quantum mechanics and computer science are introduced before moving on to describe what a quantum computer is, how it can be used to solve problems faster than 'classical' computers and its real-world implementation. It concludes with an in-depth treatment of quantum information. Containing a wealth of figures and exercises, this well-known textbook is ideal for courses on the subject, and will interest beginning graduate students and researchers in physics, computer science, mathematics, and electrical engineering.

Linear Transformations in Hilbert Space and Their Applications to Analysis

Linear Transformations in Hilbert Space and Their Applications to Analysis PDF Author: Marshall Harvey Stone
Publisher: American Mathematical Soc.
ISBN: 0821810154
Category : Mathematics
Languages : en
Pages : 632

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Book Description


Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports PDF Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 732

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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Perturbation of Spectra in Hilbert Space

Perturbation of Spectra in Hilbert Space PDF Author: Kurt Otto Friedrichs
Publisher: American Mathematical Soc.
ISBN: 9780821890585
Category : Hilbert space
Languages : en
Pages : 196

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Book Description


Linear Operators in Spaces with an Indefinite Metric

Linear Operators in Spaces with an Indefinite Metric PDF Author: Tomas I︠A︡kovlevich Azizov
Publisher:
ISBN:
Category : Mathematics
Languages : en
Pages : 328

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Book Description
An introduction to the geometry of spaces, this research monograph develops the foundations of the theory of linear operators in these spaces and examines the theory of invariant subspaces, spectral questions and the question of the extension of operators.

Numerical Ranges of Operators on Normed Spaces and of Elements of Normed Algebras

Numerical Ranges of Operators on Normed Spaces and of Elements of Normed Algebras PDF Author: F. F. Bonsall
Publisher: CUP Archive
ISBN: 0521079888
Category : Mathematics
Languages : en
Pages : 149

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Book Description
The authors develop various applications, in particular to the study of Banach algebras where the numerical range provides an important link between the algebraic and metric structures.