Regular Article - Atomic Physics
Coulomb correlation and information entropies in confined helium-like atoms
Instituto de Física, Universidade Federal da Bahia, 40170-115, Salvador, BA, Brazil
Accepted: 12 May 2021
Published online: 8 June 2021
The present work studies aspects of the electronic correlation in confined , He and atoms in their ground states using the informational entropies. In this way, different variational wavefunctions are employed in order of better take account of Coulomb correlation. The obtained values for the , and entropies are sensitive in relation to Coulomb correlation effects. In the strong confinement regime, the effects of the Coulomb correlation are negligible and the employment of the models of independent particle and two non-interacting electrons confined by a impenetrable spherical cage gains importance in this regime. Lastly, energy values are obtained in good agreement with the results available in the literature.
© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2021