20 citations · 222 across the 44 of their papers we have counts for
44 papers
A new mean field approach to finite spin systems
Gabriel Gil, Augusto Gonzalez
It is shown that a spin system is equivalent to a set of constrained harmonic oscillators. For finite, but large, systems, a continuous approximation to the density of states can b…
The NIST compilation of ionization potentials revisited (I): From He-like to Xe-like ions
Gabriel Gil, Augusto Gonzalez
The National Institute of Standards and Technology (NIST) database on ionization potentials for neutral atoms and ions is examined. For each isoelectronic sequence, we construct a…
Regularized perturbative series for the ionization potential of atomic ions
G. Gil, A. Gonzalez
We study -electron atoms with nuclear charge . It is well known that, in the cationic () high- region, the atom behaves as a weakly interacting system. The anionic…
Scaling in the correlation energies of two-dimensional artificial atoms
Alexander Odriazola, Mikko M Ervasti, Ilja Makkonen +4
We find an unexpected scaling in the correlation energy of artificial atoms, i.e., harmonically confined two-dimensional quantum dots. The scaling relation is found through extensi…
Atoms in the anionic domain, Z < N
Gabriel Gil, Augusto Gonzalez
We study atoms with N electrons, and nuclear charge Z. It is well known that the cationic regime, Z > N is qualitatively described by Thomas-Fermi theory. The anionic regime, Z < N…
Perturbative calculation of the Sternheimer anti-shielding factor with Hartree-Fock atomic orbitals
E. Diaz Suarez, Carlos M. Cruz Inclan, Augusto Gonzalez
We report a calculation of the Sternheimer anti-shielding factor, γ, by means of first order perturbation theory. In quality of basis functions, we use Hartree-Fock electronic orbi…