Relativistic quantum similarities in atoms in position and momentum spaces

A study of different quantum similarity measures and their corresponding quantum similarity indices is carried out for the atoms from H to Lr (Z=1–103Z=1–103). Relativistic effects in both position and momentum spaces have been studied by comparing the relativistic values to the non-relativistic ones. We have used the atomic electron density in both position and momentum spaces obtained within relativistic and non-relativistic numerical-parameterized optimized effective potential approximations.

► Quantum similarity measures and indices in electronic structure of atoms. ► Position and momentum electronic densities. ► Similarity of relativistic and non-relativistic densities. ► Similarity of core and valence regions of different atoms. ► Dependence with Z along the Periodic Table.