Intermolecular forces and their evaluation by perturbation theory
著者
書誌事項
Intermolecular forces and their evaluation by perturbation theory
(Lecture notes in chemistry, 25)
Springer, 1981
- U.S. : pbk.
- Germany
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注記
Includes bibliographical references
内容説明・目次
内容説明
The aim of these notes is to offer a modern picture of the pertur bative approach to the calculation of intermolecular forces. The point of view taken is that a perturbative series truncated at a low order can provide a valuable way for ~valuating interaction energies, especial ly if one limits oneself to the case of intermediate- and long-range distances between the interacting partners. Although the situation corresponding to short distances is essen tially left out from our presentation, the problems which are within the range of the theory form a vast and important class: a large var iety of phenomena of matter, in fact, depends on the existence of in teractions among atoms or molecules, which over a substantial range of distances should be classified as weak in comparison to the interactions occurring inside atoms or molecules. We are aware of the omission of some topics, which in principle could have been included in our review. For instance, a very scarce at tention has been paid to the analysis of problems involving interacting partners in degenerate states, which is of particular relevance in the case of interactions between excited atoms (only a rather quick presen tation of the formal apparatus of degenerate perturbation theory is in cluded in Chap. III). Interactions involving the simultaneous presence of more than two atoms (or mOlecules) have not been considered, with the consequent non-necessity of considering nonadditive effects which characterize the general N-body problem.
目次
I. Introduction.- II. Symmetry: An Excursion through its Formal Apparatus.- 11.1. Constants of Motion and Projectors.- 11.2. A Review of Group Theory Concepts.- 11.3. A Look to the Symmetric Group.- 11.4. Pauli Principle Implications.- 11.5. Induced and Subduced Representations.- III. Symmetry-Adapted Perturbation Theory: A General Approach.- III.1. Eigenvalue Problems and Partitioning Technique.- III.2. Constants of Motion in the Partitioning Technique.- III.3. Connection between Partitioning Technique and Perturbation Theory.- III.4. The Murrell-Shaw, Musher-Amos and Eisenschitz-London, Hirschfelder-Van der Avoird Formalisms.- III.5. Multidimensional Partitioning Technique and Degenerate Perturbation Theory.- III.6. Upper and Lower Bounds in Second-Order Perturbation Theory by Inner Projection Technique.- IV. Why Symmetry-Adapted Perturbation Theories are Needed?.- IV.1. "Polarization Approximation": Some Hints to its Possible Inadequacy for Intermolecular Interactions.- IV.2. Is the "Polarization Approximation" a Convergent Perturbative Procedure?.- IV.3. "Polarization Approximation" and its Inadequacy for Evaluating Intermolecular Interactions: Claverie's Analysis.- V. Symmetry-Adapted Perturbation Theories at Low Orders: From H2+ to the General Case.- V.1. The Interaction H...H+ as a Test for Symmetry-Adapted Perturbation Theories.- V.2. Some Useful Concepts Arising from an Analysis of the Interaction H...,H+.- V.3. A Basic Partition of the Interaction Energy Through the Second-Order for Many-Electron Subsystems.- V.4, Many-Electron Systems: the Problems Posed by Our Ignorance of Exact Unperturbed Eigenstates.- VI. The Calculation of the 1-St Order Interaction Energy.- VI.1. Coulombic Contribution to the 1-st Order Interaction Energy: a Useful Expression in Terms of the Charge Density Matrix.- VI.2. The Evaluation of the Coulombic Energy.- VI.3. Coulombic Interaction Energy in the Approximation of Neglecting Overlap Effects.- VI.4. An Assessment of the Importance of Charge Overlap Effects.- VI.5. The Exchange Contribution to the 1-st Order Interaction Energy: an Approximate Evaluation.- VI.6. Dependence of the First-Order Energy on the Wave-function Quality.- VII. The Second-order Contribution to the Interaction Energy.- VII.1. Second-order Polarization Energy in the Approximation of Neglecting Charge Overlap Effects.- VII.2. Induction and Dispersion Coefficients for Two Interacting Linear Molecules.- VII.3. Induction Energy Coefficients and Static Polarizabilities of Molecules: Two Problems in One.- VII.4. The Evaluation of the Dispersion Energy Coefficients.- VII.5. Determination of Upper and Lower Bounds to Dispersion Energy Coefficients.- VII.6. Nonexpanded Form of the 2-nd Order Polarization Energy.- VII.7. Approximate Evaluation of Exchange Polarization Effects.- VIII. Epilogue.- *Appendix A.- *Appendix B.- *Appendix C.- *Appendix D.- *References.
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