wigner6j
Introduced in 2.2
Synopsis

Wigner 6-j symbols.

v = wigner6j(j1,j2,j3,J1,J2,J3)
v = wigner6j(jJ1,jJ2,jJ3)
v = wigner6j(j,J)
Description

wigner6j returns the value of the 6-j symbol

[eqn]

The six parameters can be specified separately or in groups. In the three-argument form, wigner6j takes jJ1 = [j1 J1] etc., if two arguments are given, it takes j = [j1 j2 j3] and J = [J1 J2 J3].

Algorithm

wigner6j uses an explicit formula based on factorials. However, the formula is used in a logarithmic form to allow accurate computation of 6-j symbols with high j values.

See also

clebschgordan, wigner3j