pymiediff.special.bessel2ndDer

pymiediff.special.bessel2ndDer(n: Tensor, z: Tensor, bessel, **kwargs)

Evaluate second derivative of a spherical Bessel function.

Parameters:

• n (torch.Tensor) – Integer order.

• z (torch.Tensor) – Complex argument.

• bessel (callable) – Function implementing bessel(n, z).

Returns:

Second derivative with respect to z.

Return type:

torch.Tensor