The method of hyperspherical harmonics using an adiabatic separation between the hyper-radial coordinate and the hyperspherical angles is applied to the calculation of the ground state of the helium atom and the hydrogen negative ion. For each system the simple adiabatic separation provides much of the electron correlation energy. The non-adiabatic coupling is included by means of a perturbation treatment using both the Rayleigh—Schrödinger and Brillouin—Wigner approaches. These provide rapid convergence to the exact energy of ?2.90372 au
In this study, the energy for the ground state of helium and a few helium-like ions (Z=1-6) is compu...
The wave function for an electron in combined Coulomb and uniform magnetic fields is expanded in obl...
The wave function for an electron in combined Coulomb and uniform magnetic fields is expanded in obl...
The method of hyperspherical harmonics using an adiabatic separation between the hyper-radial coordi...
A energia não adiabática do estado fundamental para o átomo de hélio é obtida com o formalismo adiab...
A energia não adiabática do estado fundamental para o átomo de hélio é obtida com o formalismo adiab...
A energia não adiabática do estado fundamental para o átomo de hélio é obtida com o formalismo adiab...
In this dissertation, we investigate the two electron systems, H(\u27-) and He, and their interactio...
In this dissertation, we investigate the two electron systems, H(\u27-) and He, and their interactio...
In this dissertation, we investigate the two electron systems, H(\u27-) and He, and their interactio...
The nonrelativistic ionization energy levels of a helium atom are calculated for S, P, D, and F stat...
Energies and wavefunctions are calculated for the bound states of the helium atom in the hyperspheri...
The hyperspherical adiabatic approach is used to obtain the highly excited series 1sns 1S e and 1s(n...
In this study, the energy for the ground state of helium and a few helium-like ions (Z = 1-6) is com...
In this study, the energy for the ground state of helium and a few helium-like ions (Z = 1-6) is com...
In this study, the energy for the ground state of helium and a few helium-like ions (Z=1-6) is compu...
The wave function for an electron in combined Coulomb and uniform magnetic fields is expanded in obl...
The wave function for an electron in combined Coulomb and uniform magnetic fields is expanded in obl...
The method of hyperspherical harmonics using an adiabatic separation between the hyper-radial coordi...
A energia não adiabática do estado fundamental para o átomo de hélio é obtida com o formalismo adiab...
A energia não adiabática do estado fundamental para o átomo de hélio é obtida com o formalismo adiab...
A energia não adiabática do estado fundamental para o átomo de hélio é obtida com o formalismo adiab...
In this dissertation, we investigate the two electron systems, H(\u27-) and He, and their interactio...
In this dissertation, we investigate the two electron systems, H(\u27-) and He, and their interactio...
In this dissertation, we investigate the two electron systems, H(\u27-) and He, and their interactio...
The nonrelativistic ionization energy levels of a helium atom are calculated for S, P, D, and F stat...
Energies and wavefunctions are calculated for the bound states of the helium atom in the hyperspheri...
The hyperspherical adiabatic approach is used to obtain the highly excited series 1sns 1S e and 1s(n...
In this study, the energy for the ground state of helium and a few helium-like ions (Z = 1-6) is com...
In this study, the energy for the ground state of helium and a few helium-like ions (Z = 1-6) is com...
In this study, the energy for the ground state of helium and a few helium-like ions (Z=1-6) is compu...
The wave function for an electron in combined Coulomb and uniform magnetic fields is expanded in obl...
The wave function for an electron in combined Coulomb and uniform magnetic fields is expanded in obl...