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1

Studies in Perturbation Theory. XI. Lower Bounds to Energy Eigenvalues, Ground State, and Excited States

Löwdin, Per-Olov

Journal:

The Journal of Chemical Physics

Year:

1965

Language:

english

File:

PDF, 975 KB

english, 1965

2

Studies in Perturbation Theory. IV. Solution of Eigenvalue Problem by Projection Operator Formalism

Löwdin, Per-Olov

Journal:

Journal of Mathematical Physics

Year:

1962

Language:

english

File:

PDF, 1.30 MB

english, 1962

3

Note on the Separability Theorem for Electron Pairs

Löwdin, Per-Olov

Journal:

The Journal of Chemical Physics

Year:

1961

Language:

english

File:

PDF, 545 KB

english, 1961

4

On the Non-Orthogonality Problem Connected with the Use of Atomic Wave Functions in the Theory of Molecules and Crystals

Löwdin, Per-Olov

Journal:

The Journal of Chemical Physics

Year:

1950

Language:

english

File:

PDF, 1.01 MB

english, 1950

5

A Note on the Quantum-Mechanical Perturbation Theory

Löwdin, Per-Olov

Journal:

The Journal of Chemical Physics

Year:

1951

Language:

english

File:

PDF, 626 KB

english, 1951

6

Superposition of Configurations and Natural Spin Orbitals. Applications to the He Problem

Shull, Harrison, Löwdin, Per-Olov

Journal:

The Journal of Chemical Physics

Year:

1959

Language:

english

File:

PDF, 979 KB

english, 1959

7

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

Löwdin, Per-Olov

Journal:

Journal of Mathematical Physics

Year:

1965

Language:

english

File:

PDF, 1.08 MB

english, 1965

8

Studies in Perturbation Theory. V. Some Aspects on the Exact Self-Consistent Field Theory

Löwdin, Per-Olov

Journal:

Journal of Mathematical Physics

Year:

1962

Language:

english

File:

PDF, 1.26 MB

english, 1962

9

On the Quantum-Mechanical Calculation of the Cohesive Energy of Molecules and Crystals. Part II. Treatment of the Alkali Metals with Numerical Applications to Sodium

Löwdin, Per-Olov

Journal:

The Journal of Chemical Physics

Year:

1951

Language:

english

File:

PDF, 1.19 MB

english, 1951

10

Correlation Splitting in Helium-Like Ions

Shull, Harrison, Löwdin, Per-Olov

Journal:

The Journal of Chemical Physics

Year:

1956

Language:

english

File:

PDF, 852 KB

english, 1956

11

Band Theory, Valence Bond, and Tight-Binding Calculations

Löwdin, Per-Olov

Journal:

Journal of Applied Physics

Year:

1962

Language:

english

File:

PDF, 2.55 MB

english, 1962

12

Natural Spin Orbitals for Helium

Shull, Harrison, Löwdin, Per-Olov

Journal:

The Journal of Chemical Physics

Year:

1955

Language:

english

File:

PDF, 408 KB

english, 1955

13

Approximate Formulas for Many-Center Integrals in the Theory of Molecules and Crystals

Löwdin, Per-Olov

Journal:

The Journal of Chemical Physics

Year:

1953

Language:

english

File:

PDF, 385 KB

english, 1953

14

On the stability problem of a pair of adjoint operators

Löwdin, Per-Olov

Journal:

Journal of Mathematical Physics

Year:

1983

Language:

english

File:

PDF, 1.54 MB

english, 1983

15

Role of the Continuum in Superposition of Configurations

Shull, Harrison, Löwdin, Per-Olov

Journal:

The Journal of Chemical Physics

Year:

1955

Language:

english

File:

PDF, 395 KB

english, 1955

16

On the Molecular-Orbital Theory of Conjugated Organic Compounds with Application to the Perturbed Benzene Ring

Löwdin, Per-Olov

Journal:

The Journal of Chemical Physics

Year:

1953

Language:

english

File:

PDF, 1.56 MB

english, 1953

17

Introduction

Löwdin, Per-Olov

Journal:

The Journal of Chemical Physics

Year:

1965

Language:

english

File:

PDF, 291 KB

english, 1965

18

Calculation of Electric Dipole Moments of Some Heterocyclics

Löwdin, Per-Olov

Journal:

The Journal of Chemical Physics

Year:

1951

Language:

english

File:

PDF, 391 KB

english, 1951

19

On the Quantum-Mechanical Calculation of the Cohesive Energy of Molecules and Crystals. Part I. A General Energy Formula for the Ground State

Löwdin, Per-Olov

Journal:

The Journal of Chemical Physics

Year:

1951

Language:

english

File:

PDF, 837 KB

english, 1951