Upper and lower bounds in second-order perturbation theory and the unsÖld approximation
Data up to Jan 2025
Total Citations Per Year
Abstract
References (18)
A Note on the Quantum-Mechanical Perturbation Theory
1951 • 924 citations
�ber den Grundterm der Zweielektronenprobleme von H?, He, Li+, Be++ usw.
1930 • 777 citations
Recent Developments in Perturbation Theory
1964 • 656 citations
Studies in Perturbation Theory. IV. Solution of Eigenvalue Problem by Projection Operator Formalism
1962 • 621 citations
The Stark Effect from the Point of View of Schroedinger's Quantum Theory
1926 • 509 citations
Studies in Perturbation Theory. X. Lower Bounds to Energy Eigenvalues in Perturbation-Theory Ground State
1965 • 432 citations
Studies in perturbation theory
1963 • 387 citations
Quantentheorie des Wasserstoffmolek�lions und der Born-Land�schen Absto�ungskr�fte
1927 • 239 citations
Two-Electron Atoms III. A Sixth-Order Perturbation Study of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>1</mml:mn><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>S</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>1</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>Ground State
1963 • 195 citations
Studies in Perturbation Theory. IX. Connection Between Various Approaches in the Recent Development—Evaluation of Upper Bounds to Energy Eigenvalues in Schrödinger's Perturbation Theory
1965 • 174 citations
Studies in Perturbation Theory. XI. Lower Bounds to Energy Eigenvalues, Ground State, and Excited States
1965 • 146 citations
Role of the Continuum in Superposition of Configurations
1955 • 140 citations
Long-range interaction of two ls-hydrogen atoms expressed in terms of natural spin-orbitals
1959 • 134 citations
The van der Waals Interaction of Hydrogen Atoms
1935 • 126 citations
Studies in perturbation theory
1964 • 114 citations
Long-range interaction of two 1s-hydrogen atoms expressed in terms of natural spin-orbitals
1965 • 55 citations
Upper and Lower Bounds for Ground-State Second-Order Perturbation Energy
1963 • 47 citations
Upper and Lower Bounds on the Second-Order Energy Sum
1967 • 11 citations