Racah coupling

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• Racah W-coefficient — Racah s W coefficients were introduced by Giulio Racah in 1942. [G. Racah, Theory of Complex Spectra II , Physical Review, vol. 62, pp. 438 462 (1942).] These coefficients have a purely mathematical definition. In physics theyare used in… …   Wikipedia

• 9-j symbol — Wigner s 9 j symbols were introduced by Eugene Paul Wigner in 1937. They are related to recoupling coefficientsinvolving four angular momenta: [(2j 3+1)(2j 6+1)(2j 7+1)(2j 8+1)] ^frac{1}{2} egin{Bmatrix} j 1 j 2 j 3 j 4 j 5 j 6 j 7 j 8 j 9… …   Wikipedia

• Clebsch–Gordan coefficients — In physics, the Clebsch–Gordan coefficients are sets of numbers that arise in angular momentum coupling under the laws of quantum mechanics. In more mathematical terms, the CG coefficients are used in representation theory, particularly of… …   Wikipedia

• List of mathematics articles (R) — NOTOC R R. A. Fisher Lectureship Rabdology Rabin automaton Rabin signature algorithm Rabinovich Fabrikant equations Rabinowitsch trick Racah polynomials Racah W coefficient Racetrack (game) Racks and quandles Radar chart Rademacher complexity… …   Wikipedia

• Equipartition theorem — [ Thermal motion of an α helical peptide. The jittery motion is random and complex, and the energy of any particular atom can fluctuate wildly. Nevertheless, the equipartition theorem allows the average kinetic energy of each atom to be computed …   Wikipedia

• Clebsch-Gordan coefficients — In physics, the Clebsch Gordan coefficients are sets of numbers that arise in angular momentum coupling under the laws of quantum mechanics. In more mathematical terms, the CG coefficients are used in representation theory, particularly of… …   Wikipedia

• David Pines — Born June 8, 1924 (1924 06 08) (age 87) …   Wikipedia