5.18.7. operators.Linv

eminus.operators.Linv(atoms, W)

Inverse Laplacian operator.

This operator acts on options 3 and 4.

Reference: Comput. Phys. Commun. 128, 1.

Parameters:

• atoms – Atoms object.

• W – Expansion coefficients of unconstrained wave functions in reciprocal space.

Returns:

The operator applied on W.