On the separation of the information content of the Fermi and Coulomb holes and their influence on the electronic properties of molecular systems

In this paper, two information-based functions are employed as a real space measure of the Fermi and Coulomb holes for same-spin electrons. The first one is the information content of the Exchange-Correlation hole, calculated from the Kullback–Leibler divergence of the same-spin conditional pair density respect to the marginal probability (χXC). As reported previously, χXC, can be used to reveal the regions of the space associated to the classical electron pair model...