Coulomb Correlation and Information Entropies in Confined Helium-Like Atoms

Abstract

The present work studies aspects of the electronic correlation in confined H${}^{-}$, He and Li${}^{+}$ 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 $S_r$, $S_p$ and $S_t$ 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.

Version accepted for publication in European Physical Journal D

References in corpus (5)

• Two-dimensional confined hydrogen: An entropy and complexity approach
• Information entropic measures of a quantum harmonic oscillator in symmetric and asymmetric confinement within an impenetrable box
• Mutual information and electron correlation in momentum space
• Information-entropic measures for non-zero l states of confined hydrogen-like ions
• Oscillating properties of a two-electron quantum dot in the presence of a magnetic field

Cited by in corpus (2)

• Electron Confinement study in a double quantum dot by means of Shannon Entropy Information
• Informational analysis of the confinement of an electron in an asymmetric double quantum dot