title: Atomic quantum similarity indices in position and momentum spaces.
abstract: Quantum similarity for atoms is investigated using electron densities in position and momentum spaces. Contrary to the results in position space, the analysis in the momentum space shows how the momentum density carries fundamental information about periodicity and structure of the system and reveals the pattern of Mendeleev's table. A global analysis in the joint r-p space keeps this result.
authors.affiliation: Departamento de Física Atómica, Molecular y Nuclear, Universidad de Granada, 18071-Granada, Spain.
authors.forename: J C
authors.initials: JC
authors.lastname: Angulo
authors.forename: J
authors.initials: J
authors.lastname: Antolín