Author: Klaus DietzPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
On the relativistic theory of inhomogeneous many-electron systems
Author: Klaus DietzOn the relativistic theory of inhomogeneous many-electron systems
Author: Klaus DietzInhomogeneous Relativistic Electron Systems
Author: Munagala Venkata RamanaPublisher:
ISBN:
Category : Electrons
Languages : en
Pages : 268
Book Description
Abstract.
Theory of the Inhomogeneous Electron Gas
Author: Stig LundqvistPublisher: Springer Science & Business Media
ISBN: 1489904158
Category : Science
Languages : en
Pages : 405
Book Description
The theory of the inhomogeneous electron gas had its origin in the Thomas Fermi statistical theory, which is discussed in the first chapter of this book. This already leads to significant physical results for the binding energies of atomic ions, though because it leaves out shell structure the results of such a theory cannot reflect the richness of the Periodic Table. Therefore, for a long time, the earlier method proposed by Hartree, in which each electron is assigned its own personal wave function and energy, dominated atomic theory. The extension of the Hartree theory by Fock, to include exchange, had its parallel in the density description when Dirac showed how to incorporate exchange in the Thomas-Fermi theory. Considerably later, in 1951, Slater, in an important paper, showed how a result similar to but not identical with that of Dirac followed as a simplification of the Hartree-Fock method. It was Gombas and other workers who recognized that one could also incorporate electron correlation consistently into the Thomas-Fermi-Dirac theory by using uniform electron gas relations locally, and progress had been made along all these avenues by the 1950s.
Energy Research Abstracts
Author: Relativistic Theory of Atoms and Molecules II
Author: Pekka PyykköPublisher: Springer Science & Business Media
ISBN: 364251488X
Category : Science
Languages : en
Pages : 486
Book Description
Relativistic effects are of major importance for understan- ding the properties of heavier atoms and molecules. This book is still the only comprehensive bibliography on related calculations. The material is organized by subject into ta- bles containing a concise characterization. Together with Volume I (Lecture Notes in Chemistry Vol. 41, ISBN 3-540-17167-3) the literature until 1992 is now covered and 6577 references, with titles, are given in the two books. The book will provide aconvenient reference for theoretical chemists and atomic and molecular physicists interested in the properties of heavier elements. Contents: Introduction - One-particle problems - Quantum electrodynamical effects - Multielectron atoms: methods - Multielectron atoms: results - Symmetry - Molecular calcula- tions - Solid-state theory - Relativistic effects and heavy- element chemistry - Corrections to Volume I - Some comments on notations and terminology - List of acronyms and symbols - Bibliography.
Energy Density Functional Theory of Many-Electron Systems
Author: Eugene S. KryachkoPublisher: Springer Science & Business Media
ISBN: 9400919700
Category : Science
Languages : en
Pages : 862
Book Description
Energy Research Abstracts
Author: Relativistic and QED Effects in Heavy Atoms
Author: Hugh P. KellyPublisher: AIP Conference Proceedings (Nu
ISBN:
Category : Science
Languages : en
Pages : 360
Book Description
Giant Resonances in Atoms, Molecules, and Solids
Author: J.P. ConneradePublisher: Springer
ISBN: 1489920048
Category : Technology & Engineering
Languages : en
Pages : 557
Book Description
Often, a new area of science grows at the confines between recognised subject divisions, drawing upon techniques and intellectual perspectives from a diversity of fields. Such growth can remain unnoticed at first, until a characteristic fami ly of effects, described by appropriate key words, has developed, at which point a distinct subject is born. Such is very much the case with atomic 'giant resonances'. For a start, their name itself was borrowed from the field of nuclear collective resonances. The energy range in which they occur, at the juncture of the extreme UV and the soft X-rays, remains to this day a meeting point of two different experimental techniques: the grating and the crystal spectrometer. The impetus of synchrotron spectroscopy also played a large part in developing novel methods, described by many acronyms, which are used to study 'giant resonances' today. Finally, although we have described them as 'atomic' to differentiate them from their counterparts in Nuclear Physics, their occurrence on atomic sites does not inhibit their existence in molecules and solids. In fact, 'giant resonances' provide a new unifying theme, cutting accross some of the traditional scientific boundaries. After much separate development, the spectroscopies of the atom in various environments can meet afresh around this theme of common interest. Centrifugal barrier effects and 'giant resonances' proper emerged almost simultaneously in the late 1960's from two widely separated areas of physics, namely the study of free atoms and of condensed matter.