qspec.wigner_3j  (  j1 ,  j2 ,  j3 ,  m1 ,  m2 ,  m3 ,  as_sympy = False  )[source]

Calculate the Wigner-3j symbol $$W_{m_1m_2m_3}^{J_1J_2J_3}\coloneqq \begin{pmatrix} J_1 & J_2 & J_3 \\ m_1 & m_2 & m_3 \end{pmatrix}.$$

Parameters:

j1sympy_quant

The angular momentum quantum number $J_1$.

j2sympy_quant

The angular momentum quantum number $J_2$.

j3sympy_quant

The angular momentum quantum number $J_3$.

m1sympy_quant

The magnetic quantum number $m_1$.

m2sympy_quant

The magnetic quantum number $m_2$.

m3sympy_quant

The magnetic quantum number $m_3$.

as_sympybool

Return the result as a symbol (True) or as a float (False).

Returns:

w3sympy_core | float

The Wigner-3j symbol $W_{m_1m_2m_3}^{J_1J_2J_3}$.