5.10.4. energies.get_Ecoul¶ eminus.energies.get_Ecoul(atoms, n, phi=None)[source]¶ Calculate the Coulomb energy. Reference: Comput. Phys. Commun. 128, 1. Parameters: atoms – Atoms object. n – Real-space electronic density. Keyword Arguments: phi – Hartree field. Returns: Coulomb energy in Hartree.