Quantum Science Methods and Structure

1. Front Matter

   Pages i-ix

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2. Per-Olov Löwdin — Conqueror of Scientific, Educational and Rocky Mountains

   • Kimio Ohno

   Pages 1-12

3. Publications of Per-Olov Löwdin 1939 – 1976

   • Jean-Louis Calais, Osvaldo Goscinski, Jan Linderberg, Yngve Öhrn

   Pages 13-23

4. Per-Olov Löwdin in the Scientific Literature 1965–1974

   • Rolf Manne

   Pages 25-31

5. Acta Vålådalensia Revisited: Per-Olov Löwdin in Scientific Discussion

   • Anders Fröman, Osvaldo Goscinski

   Pages 33-51

6. The Non-Orthogonality Problem and Orthogonalization Procedures

   • Giuseppe Del Re

   Pages 53-75

7. Biorthonormal Bases in Hilbert Space

   • Luc Lathouwers

   Pages 77-91

8. Energy Weighted Maximum Overlap (EWMO)

   • Jan Linderberg, Yngve Öhrn, Poul W. Thulstrup

   Pages 93-103

9. The Calculation of the Exchange Parameter J = ½(Esinglet−Etriplet) for Two Equivalent Electrons Using Canonical Molecular Orbitals

   • R. D. Harcourt

   Pages 105-122

10. Importance of Overlap in the Analysis of Weak Exchange Interactions by Perturbation Methods

    • R. Block, L. Jansen

    Pages 123-140

11. Inelastic Scattering of Photons from Ionic Crystals and Effects of Overlap

    • K.-F. Berggren

    Pages 141-169

12. Some Comments on the Quantum-Mechanical Treatment of Defects in Ionic Crystals

    • Jean-Louis Calais

    Pages 171-178

13. Properties of Compressed Atoms from a Spherical Cellular Model

    • Anders Fröman

    Pages 179-199

14. Static and Dynamic Correlations in Many-Electron Systems

    • Stig Lundqvist

    Pages 201-214

15. Power Series Methods for Cellular Calculations on Atoms, Molecules and Solids

    • J. C. Slater

    Pages 215-247

16. Test of the Conventional Quantum Chemistry Methods on the Hydrogen Atom

    • T. L. Bailey, J. L. Kinsey

    Pages 249-263

17. Numerical Aspects of Weyl’s Theory

    • Michael Hehenberger

    Pages 265-275

18. Quantization and a Green’s Function for Systems of Linear Ordinary Differential Equations

    • Harold V. McIntosh

    Pages 277-294

19. On Resonant Potential Scattering

    • M. Berrondo, G. García-Calderón

    Pages 295-304

20. Laguerre Polynomials, Reminiscences from Uppsala

    • L. B. Rédei

    Pages 305-306

A "Festschrift" volume fulfils a more far-reaching purpose than the laudatory one. It shows how science develops as a result of the activities - scientific and organizational - of an individual person. Scientific achievement cannot be subjected to the very refined measurement techniques of science itself, but there is a continuous mutual evaluation among scientists which manifests itself through refereeing, literature citation and dedicatory volumes like the present one. Near and distant associates of Per-Olov Lowdin were enthusiastic about the idea of a tribute to him in the form of a collection of scientific papers on the occasion of his sixtieth birthday. Monographs and journals have fairly well-defined readerships. This book is directed to a wider group of scientists. It presents reviews of areas where Lowdin's work has influenced the development as well as research papers with original results. We feel that it can serve as a source on the current status of the quantum theory of matter for scientists in neighbouring fields. It might also provide stimulus for renewed scientific efforts among scientists turned administrators and will certainly be relevant for teachers and students of quantum theory.

• collision
• development
• diatomic molecule
• elastic scattering
• fields
• hydrogen atom
• influence
• long-range interaction
• molecule
• paper
• quantum theory
• scattering
• structure

• University of Uppsala, Uppsala, Sweden

  Jean-Louis Calais, Osvaldo Goscinski

• Aarhus University, Aarhus, Denmark

  Jan Linderberg

• University of Florida, Gainesville, USA

  Yngve Öhrn

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