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J. Math. Phys. 22, 15 (1981); http://dx.doi.org/10.1063/1.524749 (8 pages)
On the matrix elements of the U(n) generators
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Add to FacebookA straightforward derivation of the matrix elements of the U(n) generators is presented using algebraic infinitesimal techniques. An expression for the general fundamental Wigner coefficients of the group is obtained as a polynomial in the group generators. This enables generalized matrix elements to be defined without explicit reference to basis states. Such considerations are important for treating groups such as Sp(2n) whose basis states are not known.
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Lie algebras of Lie groups
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M. D. Gould, J. Math. Phys. 21, 444 (1980JMAPAQ000021000003000444000001).
G. E. Baird and L. C. Biedenharn, J. Math. Phys. 4, 1449 (1963JMAPAQ000004000012001449000001).
J. G. Nagel and M. Moshinsky, J. Math. Phys. 6, 682 (1965JMAPAQ000006000005000682000001).
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