36 citations · 146 across the 10 of their papers we have counts for
10 papers
A new class of three-body states
Nicolais Guevara, Yujun Wang, B. D. Esry
We calculate the three-body spectrum for identical bosons interacting via attractive potentials. We have found an infinite number of three-body states even when the pair in…
Helium- and Lithium-like ionic sequences: Critical charges
N. L. Guevara, A. V. Turbiner
In non-relativistic quantum mechanics we study the Coulomb systems of infinitely massive center of charge Z and two-three electrons: and . It is shown that in…
Charged Hydrogenic, Helium and Helium-Hydrogenic Molecular Chains in a Strong Magnetic Field
A. V. Turbiner, N. L. Guevara, J. C. Lopez Vieyra
A non-relativistic classification of charged molecular hydrogenic, helium and mixed helium-hydrogenic chains with one or two electrons which can exist in a strong magnetic field $B…
An accurate few-parameter ground state wave function for the Lithium atom
Nicolais L. Guevara, Frank E Harris, Alexander V Turbiner
A simple, seven-parameter trial function is proposed for a description of the ground state of the Lithium atom. It includes both spin functions. Inter-electronic distances appear i…
The molecular ion can exist in a magnetic field
A. V. Turbiner, N. L. Guevara
A detailed study of the ground state of the Coulomb system $(\al \al e e)$ which corresponds to the molecular ion in a magnetic field G in p…
Shannon entropies of atomic structure factors, off-diagonal order and electron correlation
Robin P. Sagar, Nicolais L. Guevara
Shannon entropies of one- and two-electron atomic structure factors in the position and momentum representations are used to examine the behavior of the off-diagonal elements of de…