• The Wigner D-matrix is a unitary matrix in an irreducible representation of the groups SU(2) and SO(3). It was introduced in 1927 by Eugene Wigner, and...
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    distribution Wigner's friend Wigner's theorem Wigner crystal Wigner D-matrix Wigner effect Wigner energy Wigner lattice Wigner's disease Wigner–Witmer correlation...
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    The expression (1) allows the expression of the Wigner d-matrix d m ′ , m j ( ϕ ) {\displaystyle d_{m',m}^{j}(\phi )} (for 0 ≤ ϕ ≤ 4 π {\displaystyle...
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  • Thumbnail for Wigner quasiprobability distribution
    The Wigner quasiprobability distribution (also called the Wigner function or the Wigner–Ville distribution, after Eugene Wigner and Jean-André Ville)...
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  • Wigner D-matrix, an irreducible representation of the rotation group SO(3) This disambiguation page lists articles associated with the title Wigner distribution...
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  • number Azimuthal quantum number Table of Clebsch–Gordan coefficients Wigner D-matrix Wigner–Eckart theorem Angular momentum diagrams (quantum mechanics) Clebsch–Gordan...
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  • and physics: Wigner D-matrix, represent spins and rotations of quantum states and tensor operators. Higher spin alternating sign matrix Spin group Spin...
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    where D m m ′ ( ℓ ) ( R ) ∗ {\displaystyle D_{mm'}^{(\ell )}({\mathcal {R}})^{*}} is the complex conjugate of an element of the Wigner D-matrix. In particular...
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    In relativistic quantum mechanics and quantum field theory, the Bargmann–Wigner equations describe free particles with non-zero mass and arbitrary spin...
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  • The Wigner–Eckart theorem is a theorem of representation theory and quantum mechanics. It states that matrix elements of spherical tensor operators in...
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  • his free central limit theorem had appeared before in Wigner's semi-circle law in the random matrix context. In the field of computational neuroscience...
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  • } is Wigner's small d-matrix. Note that for γ = 2π and α = β = 0; i.e., a full rotation about the z axis, the Wigner D-matrix elements become D m ′ m...
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    degenerate energy for K=0. Here DJMK is an element of the Wigner D-matrix. The first-order perturbation matrix on basis of the unperturbed rigid rotor function...
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  • density matrix operator may also be realized in phase space. Under the Wigner map, the density matrix transforms into the equivalent Wigner function...
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    the random matrix approach infinity. The distribution of the spacing or gaps between eigenvalues is addressed by the similarly named Wigner surmise. Because...
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  • follows, when the states transform under the unitary Wigner D-matrix D ( R ) {\displaystyle {\mathcal {D}}(R)} , where R is a (3×3 rotation) group element...
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  • {\hat {\mathcal {P}}}_{i}} on the Wigner D-matrix is simple. In particular P 2 D m ′ m j ( α , β , γ ) ∗ = ℏ 2 j ( j + 1 ) D m ′ m j ( α , β , γ ) ∗ with P...
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  • Wigner's friend is a thought experiment in theoretical quantum physics, first published by the Hungarian-American physicist Eugene Wigner in 1961, and...
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  • scientists Wigner, Eisenbud, Breit, Blatt, Weisskopf, and others. Related theories are U-matrix, S-matrix, by M-matrix, or T-matrix. The term R-matrix is used...
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    a Lie group List of Lie group topics Symmetry in quantum mechanics Wigner D-matrix Hall 2015 Corollary 3.51 Hall 2015 Theorem 4.28 Hall 2015 Section 10...
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  • In quantum mechanics, the Wigner–Weyl transform or Weyl–Wigner transform (after Hermann Weyl and Eugene Wigner) is the invertible mapping between functions...
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  • quasi-probability distribution Wigner's friend Wigner's theorem Wigner crystal Wigner D-matrix Wigner effect Wigner energy Wigner lattice Wigner poisoning, Xe-135...
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  • m\rangle } Introducing the Wigner D matrix elements: D ( R ) m ′ m ( j ) = ⟨ j , m ′ | U ( R ) | j , m ⟩ {\displaystyle {D(R)}_{m'm}^{(j)}=\langle j,m'|U(R)|j...
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  • characteristic values of a symmetric matrix with random coefficients. — Eugene Wigner, Results and theory of resonance absorption Wigner semicircle distribution Mehta...
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  • procedure, any direct product representation is easily reduced. Wigner D-matrix Tensor operator Wigner–Eckart theorem Representation theory Racah W-coefficient...
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  • the eigenvectors of the absolute square of the rotation matrix (the Wigner D-matrix). The associated eigenvalue is the Legendre polynomial P ℓ ( cos ⁡...
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  • information for ρ 0 {\displaystyle \rho _{0}} . Density matrix π {\displaystyle \pi } can be, for example, I d e n t i t y / dim ⁡ H {\displaystyle {\rm {Identity}}/\dim...
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  • description of atomic, nuclear or molecular collisions is the method of R-matrix of Wigner and Eisenbud. Another class of methods is based on separable expansion...
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  • Liouville flow. This formula results from applying the Wigner transformation to the density matrix version of the quantum Liouville equation, the von Neumann...
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  • identity matrix. Equivalently, given by the solution to the differential equation d d t e X t = X e X t , e X 0 = I {\displaystyle {\frac {d}{dt}}e^{Xt}=Xe^{Xt}...
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