Journal ArticleDOI
Mathematical Aspects of the Weyl Correspondence
TLDR
In this article, the Weyl correspondence between classical and quantum observables is rigorously formulated for a linear mechanical system with a finite number of degrees of freedom, where a multiplication of functions and a *-operation are introduced to make the Hilbert space of Lebesgue square-integrable complex-valued functions on phase space into a H*-algebra.Abstract:
The Weyl correspondence between classical and quantum observables is rigorously formulated for a linear mechanical system with a finite number of degrees of freedom. A multiplication of functions and a *‐operation are introduced to make the Hilbert space of Lebesgue square‐integrable complex‐valued functions on phase space into a H*‐algebra. The Weyl correspondence is realized as a *‐isomorphism f → W(f) of this H*‐algebra onto the H*‐algebra of Hilbert‐Schmidt operators on the Hilbert space of Lebesgue square‐integrable complex‐valued functions on configuration space. Moreover, the kernel of W(f) is exhibited in terms of a Fourier‐Plancherel transform of f. Elementary properties of the Wigner quasiprobability density function and its characteristic function are deduced and used to obtain these results.read more
Citations
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Statistical decision theory for quantum systems
TL;DR: In this article, the existence problem for optimal measurements of the mean value is studied and sufficient and necessary conditions for optimality are given. And the general theory is applied to the case of Gaussian (quasifree) states of Bose systems.
Journal ArticleDOI
When is the wigner quasi-probability density non-negative?
TL;DR: In this article, it was shown that a necessary and sufficient condition for the Wigner quasi-probability density to be a true density is that the corresponding Schrodinger state function be the exponential of a quadratic polynomial.
Journal ArticleDOI
Algebras of distributions suitable for phase-space quantum mechanics. I
TL;DR: In this article, the twisted product of functions on R2N is extended to a *-algebra of tempered distributions that contains the rapidly decreasing smooth functions, the distributions of compact support, and all polynomials, and moreover is invariant under the Fourier transformation.
Journal ArticleDOI
The Moyal representation for spin
TL;DR: The phase-space approach to spin is developed from two basic principles, SU(2)-covariance and traciality, as a theory of Wigner functions on the sphere.
Journal ArticleDOI
Quantization methods: a guide for physicists and analysts
S. Twareque Ali,Miroslav Engliš +1 more
TL;DR: An overview of some of the better known quantization techniques for systems with finite numbers of degrees-of-freedom can be found in this paper, including canonical quantization and the related Dirac scheme, introduced in the early days of quantum mechanics.
References
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Book
Mathematical Foundations of Quantum Mechanics
TL;DR: The Mathematical Foundations of Quantum Mechanics as discussed by the authors is a seminal work in theoretical physics that introduced the theory of Hermitean operators and Hilbert spaces and provided a mathematical framework for quantum mechanics.
Book
Abstract Harmonic Analysis
Edwin Hewitt,Kenneth A. Ross +1 more
TL;DR: The first € price and the £ and $ price are net prices, subject to local VAT as discussed by the authors, and prices and other details are subject to change without notice. All errors and omissions excepted.
Mathematical Foundations of Quantum Mechanics
TL;DR: The Mathematical Foundations of Quantum Mechanics as discussed by the authors is a seminal work in theoretical physics that introduced the theory of Hermitean operators and Hilbert spaces and provided a mathematical framework for quantum mechanics.