wigner_little_d – WignerD

public interface wigner_little_d

Interface to access the routines to calculate d(β) via matrix diagonalization or the analytic expression

Return the Wigner d-matrix $d^j_{m'm}(\beta)$ for integer j

Type	Intent	Optional		Name
integer,	intent(in)		::	j	The angular momentum $j$
real(kind=rp),	intent(in)		::	euler_beta	The euler angle β
logical,	intent(in),	optional	::	use_analytic	Force the use of the analytic expression to obtain $d^j(\beta)$ ?

The matrix $d^j(\beta)$

Return the Wigner d-matrix $d^j_{m'm}(\beta)$ for real j

Type	Intent	Optional		Name
real(kind=rp),	intent(in)		::	j	The angular momentum $j$
real(kind=rp),	intent(in)		::	euler_beta	The euler angle β
logical,	intent(in),	optional	::	use_analytic	Force the use of the analytic expression to obtain $d^j(\beta)$ ?

The matrix $d^j(\beta)$