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The Unitary Group In Quantum Chemistry
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Book Synopsis The Unitary Group in Quantum Chemistry by : Frederick Albert Matsen
Download or read book The Unitary Group in Quantum Chemistry written by Frederick Albert Matsen and published by Elsevier Publishing Company. This book was released on 1986 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: A major concern of quantum chemistry is the prediction of properties of atoms and molecules. These predictions can be based on the solutions to certain theoretical equations. The solutions to equations for molecular systems are usually not exact. Approximate solutions therefore have to be obtained by the application of sophisticated mathematical techniques. The application of symmetry theory is essential in this process. Unitary groups arise from the application of this symmetry theory. This book concerns the use of the unitary group in such quantum chemistry calculations. The subject will be of interest to physicists and those chemists who have a strong mathematical leaning and who are developing methods for calculating molecular properties by quantum mechanical methods.
Book Synopsis The Unitary Group in Quantum Chemistry by : F. A. Matsen
Download or read book The Unitary Group in Quantum Chemistry written by F. A. Matsen and published by . This book was released on 1986 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Unitary group formulation of quantum chemistry by : Loudon Lee Campbell
Download or read book The Unitary group formulation of quantum chemistry written by Loudon Lee Campbell and published by . This book was released on 1990 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Symmetric Group in Quantum Chemistry by : R. Pauncz
Download or read book The Symmetric Group in Quantum Chemistry written by R. Pauncz and published by CRC Press. This book was released on 2018-05-04 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book to provide comprehensive treatment of the use of the symmetric group in quantum chemical structures of atoms, molecules, and solids. It begins with the conventional Slater determinant approach and proceeds to the basics of the symmetric group and the construction of spin eigenfunctions. The heart of the book is in the chapter dealing with spin-free quantum chemistry showing the great interpretation value of this method. The last three chapters include the unitary group approach, the symmetric group approach, and the spin-coupled valence bond method. An extensive bibliography concludes the book.
Book Synopsis The Unitary Group for the Evaluation of Electronic Energy Matrix Elements by : Jürgen Hinze
Download or read book The Unitary Group for the Evaluation of Electronic Energy Matrix Elements written by Jürgen Hinze and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last thirty years, with the development of high speed electronic computers, methods have evolved, which permit an accurate and quantitative, ab initio determina tion of the electronic wavefunctions of atoms and molecules. Thus a detailed elucida tion of the electronic energy and structure of molecules has become possible using quantum mechanics directly. Ho\~ever, it is necessary, if such calculations are to yield accurate and reliable results, to include electron correlation explicitely, which requires in general . configuration mixing procedures with an extremely large 5 number of configurations, of the order of 10 configurations. With eigenvalue problems of this size, the limits of even the largest and fastest computers are reached rapidly, and their solution has become possible only, because direct methods have been deve~ loped which permit the determination of eigenvalues and eigenvectors for such large matrices iteratively without constructing the energy matrix explicitely. These direct methods had been limited to the description of closed shell systems, i. e. systems with a single dominant closed shell reference determinant. This limitation arose, because with an open shell reference or with several reference determinants, no procedures were known, which allowed a rapid calculation of the energy matrix elements between configurations with general and widely different spin couplings, which would be necessary. Recently such methods have been developed, based on early work of Gelfand, Biedenharn and Moshinski using a unitary group representation of different spin coupled states; Paldus achieved an extremely compact description.
Book Synopsis Applications of the Unitary Group in Molecular Quantum Chemistry by : James Stephen Battle
Download or read book Applications of the Unitary Group in Molecular Quantum Chemistry written by James Stephen Battle and published by . This book was released on 1992 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Application of Unitary Groups to Quantum Chemistry by : Michael James Downward
Download or read book Application of Unitary Groups to Quantum Chemistry written by Michael James Downward and published by . This book was released on 1977 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Unitary Group for the Evaluation of Electronic Energy Matrix Elements by : Jurgen Hinze
Download or read book The Unitary Group for the Evaluation of Electronic Energy Matrix Elements written by Jurgen Hinze and published by . This book was released on 1981-02-01 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Quantum Chemistry by : Henry F. Schaefer III
Download or read book Quantum Chemistry written by Henry F. Schaefer III and published by Courier Corporation. This book was released on 2012-11-14 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: For each of 150 landmark papers in ab initio molecular electronic structure methods, the author provides a lucid commentary that focuses on methodology, rather than particular chemical problems. 1984 edition.
Book Synopsis The Unitary Group for the Evaluation of Electronic Energy Matrix Elements by :
Download or read book The Unitary Group for the Evaluation of Electronic Energy Matrix Elements written by and published by . This book was released on 1981 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Group Theory and Quantum Mechanics by : Michael Tinkham
Download or read book Group Theory and Quantum Mechanics written by Michael Tinkham and published by Courier Corporation. This book was released on 2012-04-20 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: This graduate-level text develops the aspects of group theory most relevant to physics and chemistry (such as the theory of representations) and illustrates their applications to quantum mechanics. The first five chapters focus chiefly on the introduction of methods, illustrated by physical examples, and the final three chapters offer a systematic treatment of the quantum theory of atoms, molecules, and solids. The formal theory of finite groups and their representation is developed in Chapters 1 through 4 and illustrated by examples from the crystallographic point groups basic to solid-state and molecular theory. Chapter 5 is devoted to the theory of systems with full rotational symmetry, Chapter 6 to the systematic presentation of atomic structure, and Chapter 7 to molecular quantum mechanics. Chapter 8, which deals with solid-state physics, treats electronic energy band theory and magnetic crystal symmetry. A compact and worthwhile compilation of the scattered material on standard methods, this volume presumes a basic understanding of quantum theory.
Book Synopsis The Graphical Method of Spin Algebras in the Spin Dependent Unitary Group Approach to Quantum Chemistry by : Michael Wolfgang Lucht
Download or read book The Graphical Method of Spin Algebras in the Spin Dependent Unitary Group Approach to Quantum Chemistry written by Michael Wolfgang Lucht and published by . This book was released on 1996 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Second Quantized Approach to Quantum Chemistry by : Peter R. Surjan
Download or read book Second Quantized Approach to Quantum Chemistry written by Peter R. Surjan and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this book is to give a simple, short, and elementary introduction to the second quantized formalism as applied to a many-electron system. It is intended for those, mainly chemists, who are familiar with traditional quantum chemistry but have not yet become acquainted with second quantization. The treatment is, in part, based on a series of seminars held by the author on the subject. It has been realized that many quantum chemists either interested in theory or in applications, being educated as chemi~ts and not as physicists, have never devoted themselves to taking a course on the second quantized approach. Most available textbooks on this topic are not very easy to follow for those who are not trained in theory, or they are not detailed enough to offer a comprehensive treatment. At the same time there are several papers in quantum chemical literature which take advantage of using second quantization, and it would be worthwhile if those papers were accessible for a wider reading public. For this reason, it is intended in this survey to review the basic formalism of second quantization, and to treat some selected chapters of quantum chemistry in this language. Most derivations will be carried out in a detailed manner, so the reader need not accept gaps to understand the result.
Download or read book Advances in Quantum Chemistry written by and published by Academic Press. This book was released on 1992-04-08 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Quantum Chemistry
Book Synopsis Quantum Chemistry and Dynamics of Excited States by : Leticia González
Download or read book Quantum Chemistry and Dynamics of Excited States written by Leticia González and published by John Wiley & Sons. This book was released on 2020-11-10 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: An introduction to the rapidly evolving methodology of electronic excited states For academic researchers, postdocs, graduate and undergraduate students, Quantum Chemistry and Dynamics of Excited States: Methods and Applications reports the most updated and accurate theoretical techniques to treat electronic excited states. From methods to deal with stationary calculations through time-dependent simulations of molecular systems, this book serves as a guide for beginners in the field and knowledge seekers alike. Taking into account the most recent theory developments and representative applications, it also covers the often-overlooked gap between theoretical and computational chemistry. An excellent reference for both researchers and students, Excited States provides essential knowledge on quantum chemistry, an in-depth overview of the latest developments, and theoretical techniques around the properties and nonadiabatic dynamics of chemical systems. Readers will learn: ● Essential theoretical techniques to describe the properties and dynamics of chemical systems ● Electronic Structure methods for stationary calculations ● Methods for electronic excited states from both a quantum chemical and time-dependent point of view ● A breakdown of the most recent developments in the past 30 years For those searching for a better understanding of excited states as they relate to chemistry, biochemistry, industrial chemistry, and beyond, Quantum Chemistry and Dynamics of Excited States provides a solid education in the necessary foundations and important theories of excited states in photochemistry and ultrafast phenomena.
Book Synopsis Group Theory and Chemistry by : David M. Bishop
Download or read book Group Theory and Chemistry written by David M. Bishop and published by Courier Corporation. This book was released on 2012-07-12 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concise, self-contained introduction to group theory and its applications to chemical problems. Symmetry, matrices, molecular vibrations, transition metal chemistry, more. Relevant math included. Advanced-undergraduate/graduate-level. 1973 edition.
Book Synopsis Fundamental World of Quantum Chemistry by : Erkki Brändas
Download or read book Fundamental World of Quantum Chemistry written by Erkki Brändas and published by Springer Science & Business Media. This book was released on 2003 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt: Per-Olov Löwdin's stature has been a symbol of the world of quantum theory during the past five decades, through his basic contributions to the development of the conceptual framework of Quantum Chemistry and introduction of the fundamental concepts; through a staggering number of regular summer schools, winter institutes, innumerable lectures at Uppsala, Gainesville and elsewhere, and Sanibel Symposia; by founding the International Journal of Quantum Chemistry and Advances in Quantum Chemistry; and through his vision of the possible and his optimism for the future, which has inspired generations of physicists, chemists, mathematicians, and biologists to devote their lives to molecular electronic theory and dynamics, solid state, and quantum biology. Fundamental World of Quantum Chemistry: Volumes I, II and III form a collection of papers dedicated to the memory of Per-Olov Löwdin. These volumes are of interest to a broad audience of quantum, theoretical, physical, biological, and computational chemists; atomic, molecular, and condensed matter physicists; biophysicists; mathematicians working in many-body theory; and historians and philosophers of natural science.
