Aspects Of Many Body Effects In Molecules And Extended Systems
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| Author | : Debashis Mukherjee |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 551 |
| Release | : 2012-12-06 |
| Genre | : Science |
| ISBN | : 3642613306 |
This volume features invited lectures presented in the workshop-cum-symposium on aspects of many-body effects in molecules and extended systems, Calcutta, February 1 - 10, 1988. The organizers invited leading experts to present recent developments of many-body methods as applied to molecules and condensed systems. The panorama portrayed is quite broad, but by no means exhaustive. The emphasis is undoubtedly on a "molecular point of view".
| Author | : Jean Maruani |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 552 |
| Release | : 2003-11-30 |
| Genre | : Science |
| ISBN | : 9781402015649 |
Advanced Topics in Theoretical Chemical Physics is a collection of 20 selected papers from the scientific presentations of the Fourth Congress of the International Society for Theoretical Chemical Physics (ISTCP) held at Marly-le-Roi, France, in July 2002. Advanced Topics in Theoretical Chemical Physics encompasses a broad spectrum in which scientists place special emphasis on theoretical methods in chemistry and physics. The chapters in the book are divided into five sections: I: Advances Chemical Thermodynamics II: Electronic Structure of Molecular Systems III: Molecular Interaction and Dynamics IV: Condensed Matter V: Playing with Numbers This book is an invaluable resource for all academics and researchers interested in theoretical, quantum or statistical, chemical physics or physical chemistry. It presents a selection of some of the most advanced methods, results and insights in this exciting area.
| Author | : |
| Publisher | : Academic Press |
| Total Pages | : 398 |
| Release | : 1992-01-08 |
| Genre | : Science |
| ISBN | : 0080582478 |
Advances in Quantum Chemistry
| Author | : Ermanno Gianinetti |
| Publisher | : World Scientific |
| Total Pages | : 337 |
| Release | : 2000-10-09 |
| Genre | : Science |
| ISBN | : 9814492698 |
This volume comprises six chapters which explore the development and applications of the methods of computational chemistry. The first chapter is on new developments in coupled-cluster (CC) theory. The homotopy method is used to obtain complete sets of solutions of nonlinear CC equations. The correspondence between multiple solutions to the CCSD, CCSDT, and full CI equations is established, and the applications of the new approach in modeling molecular systems are discussed. The second chapter reviews the computational theory for the time-dependent calculations of a solution to the Schrödinger equation for two electrons and focuses on the development of propagators to the solution.The next chapter features a discussion on a new self-consistent field for molecular interactions (SCF-MI) scheme for modifying Roothaan equations in order to avoid basis set superposition errors (BSSE). This method is especially suitable for computations of intermolecular interactions. Details of the theory, along with examples of applications to nucleic acid base pair complexes, are given. This chapter is well complemented by the following chapter, which reports the current status of computational studies of aromatic stacking and hydrogen bonding interactions among nucleic acid bases. The next chapter reveals the possibility of calculating the kinetics of chemical reactions in biological systems from the first principles. The last chapter reviews the results of rigorous ab initio studies of the series of derivatives of methane, silane, and germane. The presented molecular and vibrational parameters complement experimental data for these systems. In addition, the theoretical approach allows the prediction of the effects of halogeno-substitutions on their structures and properties.
| Author | : Petr Cársky |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 672 |
| Release | : 2010-07-03 |
| Genre | : Science |
| ISBN | : 9048128854 |
I feel very honored that I have been asked to write a Foreword to this book. The subject of the book – “Coupled cluster theory” – has been around for about half a century. The basic theory and explicit equations for closed-shell ground states were formulated before 1970. At the beginning of the seventies the rst ab initio calcu- tion were carried out. At that time speed and memory of computers were very limited compared to today’s standards. Moreover, the size of one-electron bases employed was small, so that it was only possible to achieve an orientation in methodical aspects rather than to generate new signi cant results. Extensive use of the coupled-cluster method started at the beginning of the eighties. With the help of more powerful computers the results of coupled-cluster approaches started to yield more and more interesting results of relevance to the interpretation of experimental data. New ideas in methodology kept appearing and computer codes became more and more ef cient. This exciting situation continues to this very day. Remarkably enough, even the - quired equations can now be generated by a computer with the help of symbolic languages. The size of this monograph and the rich variety of articles it contains attests to the usefulness and viability of the couple-cluster formalism for the h- dling of many-electron correlation effects. This represents a vivid testimony of a tremendous work that has been accomplished in coupled-cluster methodology and its exploitation.
| Author | : Rajat K. Chaudhuri |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 230 |
| Release | : 2010-06-16 |
| Genre | : Science |
| ISBN | : 3642103227 |
In recent years there have been great advances in the fields of laboratory and astronomical spectroscopy. These have been equally matched by large-scale computations using state-of-the-art theoretical methods. The accurate atomic opacities that are available today play a great role in the field of biomedical research using nanotechnology. The proceedings of the "International Conference on Recent Advances in Spectroscopy: Theoretical, Experimental and Astrophysical Perspectives" contain both invited and contributory papers, which give the most recent results by the peers in the areas of theoretical and experimental atomic physics as well as observational astrophysics.
| Author | : Maung Maung Khin |
| Publisher | : World Scientific |
| Total Pages | : 214 |
| Release | : 1992-12-18 |
| Genre | : |
| ISBN | : 9814553395 |
Professor J Dirk Walecka has made significant and lasting contributions to the field of nuclear physics. His work on many-body theory and electron scattering from nuclei profoundly influenced the direction of research in electromagnetic nuclear physics. His formulation of semileptonic weak interactions with nuclei introduced many nuclear physicists to the 'standard model' and the concept of the nucleus as a 'laboratory' for studying fundamental interactions. His development of meson-baryon field theories for nuclear systems ('quantum hadrodynamics') initiated novel research on relativistic effects in nuclei, high-density nuclear matter, and applications of field-theoretic techniques to the nuclear many-body problem.This proceedings focusses on three major areas of Professor Walecka's research: many-body theory, electroweak interactions in nuclei and relativistic nuclear physics. The topics discussed cover a broad and interesting range in condensed matter physics, nuclear physics, high-energy physics and cosmology.
| Author | : Björn O. Roos |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 417 |
| Release | : 2012-12-06 |
| Genre | : Science |
| ISBN | : 3642581501 |
"Quantum Chemistry" is the course material of a European Summer School in Quantum Chemistry, organized by Bj|rn O. Roos. It consists of lectures by outstanding scientists who participate in the education of students and young scientists. The book has a wider appeal as additional reading for University courses. Contents: P.-A. Malmquist: Mathematical Tools in Quantum Chemistry J. Olsen: The Method of Second Quantization P.R. Taylor: Molecular Symmetry and Quantum Chemistry B.O. Roos: The Multiconfigurational (MC) Self-Consistent Field (SCF) Theory P.E.M. Siegbahn: The Configuration Interaction Method T. Helgaker: Optimization of Minima and Saddle Points P.R. Taylor: Accurate Calculations and Calibration U. Wahlgren: Effective Core Potential Method
| Author | : S. Fraga |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 143 |
| Release | : 2012-12-06 |
| Genre | : Science |
| ISBN | : 364293532X |
Impressive advances have been made in the study of atomic structures, at both the experimental and theoretical levels. And yet, the scarcity of information on atomic energy levels is evident At the same time there exists a need for data, because of the developments in such diverse fields as astrophysics and plasma and laser research, all of them of fundamental importance as well as practical impact. This project of research in atomic structure, consisting of three components (formulation, computer program, and numerical results), constitutes a basic and comprehensive work with a variety of uses. In its most practical application, it will yield a rather accurate prediction of the energy levels of any atomic system, of use per se or in the interpretation and confirmation of experimental results. On the other hand, it will also be of use in the comparative study of the appropriateness of the various levels of approximation and as a point of reference.
| Author | : Pierre Turq |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 222 |
| Release | : 2012-12-06 |
| Genre | : Science |
| ISBN | : 3642487556 |
The presence of freely moving charges gives peculiar properties to electrolyte solutions, such as electric conductance, charge transfer, and junction potentials in electrochemical systems. These charges play a dominant role in transport processes, by contrast with classical equilibrium thermodynamics which considers the electrically neutral electrolyte compounds. The present status of transport theory does not permit a first prin ciples analys1s of all transport phenomena with a detailed model of the relevant interactions. Host of the models are still unsufficient for real systems of reasonable complexity. The Liouville equation may be adapted with some Brownian approximations to problems of interact ing solute particles in a continuum (solvent>; however, keeping the Liouville level beyond the limiting laws is an unsolvable task. Some progress was made at the Pokker-Planck level; however, despite a promising start, this theory in its actual form is still unsatis factory for complex systems involving many ions and chemical reac tions. A better approach is provided by the so-called Smoluchowski level in which average velocities are used, but there the hydrodyna mic interactions produce some difficulties. The chemist or chemical engineer, or anyone working with complex electrolyte solutions in applied research wants a general representa tion of the transport phenomena which does not reduce the natural complexity of the multicomponent systems. Reduction of the natural complexity generally is connected with substantial changes of the systems.
