Racah V-Coefficient

The Racah -coefficients are written

(1)

and are sometimes expressed using the related Clebsch-Gordan coefficients

(2)

or Wigner 3j-symbols. Connections among the three are

(3)

(4)

(5)

REFERENCES:

Biedenharn, L. C. and Louck, J. D. The Racah-Wigner Algebra in Quantum Theory. Reading, MA: Addison-Wesley, 1981.

Biedenharn, L. C. and Louck, J. D. Angular Momentum in Quantum Physics: Theory and Applications. Reading, MA: Addison-Wesley, 1981.

Sobel'man, I. I. "Angular Momenta." Ch. 4 in Atomic Spectra and Radiative Transitions, 2nd ed. Berlin: Springer-Verlag, 1992.