Excited States In Quantum Chemistry

Author : Cleanthes A. Nicolaides,D.R. Beck
Publisher : Springer Science & Business Media
Page : 572 pages
File Size : 49,5 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789400999022

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Excited States in Quantum Chemistry by Cleanthes A. Nicolaides,D.R. Beck Pdf

It is undoubtedly true that much of the progress in the quant~m theory of matter is due to the remarkable success of the independent particle model (IPM)--especially in describing ground states. However, the accurate experimental results of the last 10 years or so, on a variety of spectroscopic phenomena and chemical processes which involve the Excited State, and the related failure of the IPM to reproduce accurately--in many cases, even qualitatively--the observed data, have sent to theorists a clear message: There is need to create and/or apply general and useful approaches to the many-electron problem of the excited state which go beyond the IPM, treat electron correlation and relativity and explain or predict all relevant physical or chemical information with consistent accuracy. This book contains articles devoted mainly to some of the most important new developments in Quantum Chemistry concerning the theoretical foundations and the computational implementation of many-body approaches to the quantitative and detailed under standing of the electronic excited states of atoms, molecules and solids. Furthermore, it contains experimental and pheno menological articles on Photoelectron and Auger spectroscopy, Lifetime measurements and Organic Photochemistry. In combination or individually, these articles constitute a good description of some current theoretical and experimental work on the electronic structure and spectroscopy of atoms, molecules, polymers, surfaces, metal oxides and amorphous solids.

Author : Leticia González,Roland Lindh
Publisher : John Wiley & Sons
Page : 52 pages
File Size : 40,7 Mb
Release : 2021-02-01
Category : Science
ISBN : 9781119417750

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Quantum Chemistry and Dynamics of Excited States by Leticia González,Roland Lindh Pdf

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.

Author : Odilon Chalvet,Raymond Daudel,Simon Diner,Jean Paul Malrieu
Publisher : Springer Science & Business Media
Page : 470 pages
File Size : 53,8 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401014564

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Localization and Delocalization in Quantum Chemistry by Odilon Chalvet,Raymond Daudel,Simon Diner,Jean Paul Malrieu Pdf

The second volume of the proceedings of the international seminar devoted to locali· zation and delocalization in quantum chemistry is divided into four parts. The first one is mainly concerned with the localizability of electrons in ionized and exited states. The second part shows how is it possible to take advantage of the localizability of electrons to compute molecular wave-functions. The third part of the book is an homogeneous analysis of the electronic collective excitation and of the motion of excitons in organic solids. The last section is devoted to the study of the role of electron localizability in the chemical reactivity of molecules. Concluding remarks are concerned with a careful analysis of the localizability concept itself in relation with a possible interpretation of the wave-mechanics. PART I ELECTRON LOCALIZATION IN IONIZED AND EXCITED STATES APPLICATIONS OF PAIR DENSITY ANALYSIS R. CONSTANCIEL and L. ESNAULT Centre de Mecanique Ondulatoire Appliquee, Paris, France Abstract. The method of pair density analysis is applied to various kinds of calculations. We examine the influence of the quality of the wavefunction and of the nuclear configuration; the problem of hybridization is discussed, as weIl as the relations between separability and excitation.

Author : Tamás Veszprémi,Miklós Fehér
Publisher : Springer Science & Business Media
Page : 381 pages
File Size : 49,7 Mb
Release : 2012-12-06
Category : Science
ISBN : 9781461541899

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Quantum Chemistry by Tamás Veszprémi,Miklós Fehér Pdf

`Quantum Chemistry [the branch of Computational Chemistry that applies the laws of Quantum Mechanics to chemical systems] is one of the most dynamic fields of contemporary chemistry, providing a solid foundation for all of chemistry, and serving as the basis for practical, computational methodologies with applications in virtually all branches of chemistry ... The increased sophistication, accuracy and scope of the theory of chemistry are due to a large extent to the spectacular development of quantum chemistry, and in this book the authors have made a remarkable effort to provide a modern account of the field.' From the Foreword by Paul Mezey, University of Saskatchewan. Quantum Chemistry: Fundamentals to Applications develops quantum chemistry all the way from the fundamentals, found in Part I, through the applications that make up Part II. The applications include: molecular structure; spectroscopy; thermodynamics; chemical reactions; solvent effects; and excited state chemistry. The importance of this field is underscored by the fact that the 1998 Nobel Prize in Chemistry was awarded for the development of Quantum Chemistry.

Author : Odilon Chalvet
Publisher : Springer
Page : 506 pages
File Size : 40,8 Mb
Release : 1976-06-30
Category : Science
ISBN : UCAL:B4455421

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Localization and Delocalization in Quantum Chemistry by Odilon Chalvet Pdf

The second volume of the proceedings of the international seminar devoted to locali· zation and delocalization in quantum chemistry is divided into four parts. The first one is mainly concerned with the localizability of electrons in ionized and exited states. The second part shows how is it possible to take advantage of the localizability of electrons to compute molecular wave-functions. The third part of the book is an homogeneous analysis of the electronic collective excitation and of the motion of excitons in organic solids. The last section is devoted to the study of the role of electron localizability in the chemical reactivity of molecules. Concluding remarks are concerned with a careful analysis of the localizability concept itself in relation with a possible interpretation of the wave-mechanics. PART I ELECTRON LOCALIZATION IN IONIZED AND EXCITED STATES APPLICATIONS OF PAIR DENSITY ANALYSIS R. CONSTANCIEL and L. ESNAULT Centre de Mecanique Ondulatoire Appliquee, Paris, France Abstract. The method of pair density analysis is applied to various kinds of calculations. We examine the influence of the quality of the wavefunction and of the nuclear configuration; the problem of hybridization is discussed, as weIl as the relations between separability and excitation.

Author : C a Nicolaides,D R Beck
Publisher : Unknown
Page : 588 pages
File Size : 48,6 Mb
Release : 1978-12-31
Category : Electronic
ISBN : 9400999038

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Excited States in Quantum Chemistry by C a Nicolaides,D R Beck Pdf

Author : Cleanthes A. Nicolaides
Publisher : Unknown
Page : 0 pages
File Size : 44,9 Mb
Release : 1979
Category : Excited state chemistry
ISBN : OCLC:251978678

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Excited States in Quantum Chemistry by Cleanthes A. Nicolaides Pdf

Author : Michael A. Robb
Publisher : Royal Society of Chemistry
Page : 226 pages
File Size : 44,8 Mb
Release : 2018-03-02
Category : Science
ISBN : 9781782628644

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Theoretical Chemistry for Electronic Excited States by Michael A. Robb Pdf

Over the past few decades, experimental excited state chemistry has moved into the femtochemistry era, where time resolution is short enough to resolve nuclear dynamics. Recently, the time resolution has moved into the attosecond domain, where electronic motion can be resolved as well. Theoretical chemistry is becoming an essential partner in such experimental investigations; not only for the interpretation of the results, but also to suggest new experiments. This book provides an integrated approach. The three main facets of excited-state theoretical chemistry; namely, mechanism, which focuses on the shape of the potential surface along the reaction path, multi-state electronic structure methods, and non-adiabatic dynamics, have been brought together into one volume. Theoretical Chemistry for Electronic Excited States is aimed at both theorists and experimentalists, involved in theoretical chemistry, in electronic structure computations and in molecular dynamics. The book is intended to provide both with the knowledge and understanding to discover ways to work together more closely through its unified approach.

Author : Lucjan Piela
Publisher : Elsevier
Page : 1122 pages
File Size : 53,6 Mb
Release : 2006-11-28
Category : Science
ISBN : 9780080466767

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Ideas of Quantum Chemistry by Lucjan Piela Pdf

Ideas of Quantum Chemistry shows how quantum mechanics is applied to chemistry to give it a theoretical foundation. The structure of the book (a TREE-form) emphasizes the logical relationships between various topics, facts and methods. It shows the reader which parts of the text are needed for understanding specific aspects of the subject matter. Interspersed throughout the text are short biographies of key scientists and their contributions to the development of the field.Ideas of Quantum Chemistry has both textbook and reference work aspects. Like a textbook, the material is organized into digestable sections with each chapter following the same structure. It answers frequently asked questions and highlights the most important conclusions and the essential mathematical formulae in the text. In its reference aspects, it has a broader range than traditional quantum chemistry books and reviews virtually all of the pertinent literature. It is useful both for beginners as well as specialists in advanced topics of quantum chemistry. The book is supplemented by an appendix on the Internet. * Presents the widest range of quantum chemical problems covered in one book * Unique structure allows material to be tailored to the specific needs of the reader * Informal language facilitates the understanding of difficult topics

Author : Anonim
Publisher : Unknown
Page : 476 pages
File Size : 42,6 Mb
Release : 1976
Category : Electronic
ISBN : OCLC:636833594

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Ionized and Excited States by Anonim Pdf

Author : Anonim
Publisher : Academic Press
Page : 360 pages
File Size : 45,6 Mb
Release : 2019-09-07
Category : Science
ISBN : 9780128161753

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State of The Art of Molecular Electronic Structure Computations: Correlation Methods, Basis Sets and More by Anonim Pdf

State of the Art of Molecular Electronic Structure Computations: Correlation Methods, Basis Sets and More, Volume 79 in the Advances in Quantum Chemistry series, presents surveys of current topics in this rapidly developing field that has emerged at the cross section of the historically established areas of mathematics, physics, chemistry and biology. Chapters in this new release include Computing accurate molecular properties in real space using multiresolution analysis, Self-consistent electron-nucleus cusp correction for molecular orbitals, Correlated methods for computational spectroscopy, Potential energy curves for the NaH molecule and its cation with the cock space coupled cluster method, and much more. Presents surveys of current topics in this rapidly-developing field that has emerged at the cross section of the historically established areas of mathematics, physics, chemistry and biology Features detailed reviews written by leading international researchers

Author : OpenStax
Publisher : Unknown
Page : 622 pages
File Size : 55,7 Mb
Release : 2016-11-04
Category : Science
ISBN : 1680920456

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University Physics by OpenStax Pdf

University Physics is a three-volume collection that meets the scope and sequence requirements for two- and three-semester calculus-based physics courses. Volume 1 covers mechanics, sound, oscillations, and waves. Volume 2 covers thermodynamics, electricity and magnetism, and Volume 3 covers optics and modern physics. This textbook emphasizes connections between between theory and application, making physics concepts interesting and accessible to students while maintaining the mathematical rigor inherent in the subject. Frequent, strong examples focus on how to approach a problem, how to work with the equations, and how to check and generalize the result. The text and images in this textbook are grayscale.

Author : Nicolas Ferré,Michael Filatov,Miquel Huix-Rotllant
Publisher : Springer
Page : 481 pages
File Size : 50,6 Mb
Release : 2015-08-26
Category : Science
ISBN : 9783319220819

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Density-Functional Methods for Excited States by Nicolas Ferré,Michael Filatov,Miquel Huix-Rotllant Pdf

The series Topics in Current Chemistry presents critical reviews of the present and future trends in modern chemical research. The scope of coverage is all areas of chemical science including the interfaces with related disciplines such as biology, medicine and materials science. The goal of each thematic volume is to give the non-specialist reader, whether in academia or industry, a comprehensive insight into an area where new research is emerging which is of interest to a larger scientific audience. Each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field. Review articles for the individual volumes are invited by the volume editors. Readership: research chemists at universities or in industry, graduate students

Author : B L Hammond,W A Lester Jr.,P J Reynolds
Publisher : World Scientific
Page : 320 pages
File Size : 46,6 Mb
Release : 1994-03-29
Category : Electronic
ISBN : 9789814506755

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Monte Carlo Methods in Ab Initio Quantum Chemistry by B L Hammond,W A Lester Jr.,P J Reynolds Pdf

This book presents the basic theory and application of the Monte Carlo method to the electronic structure of atoms and molecules. It assumes no previous knowledge of the subject, only a knowledge of molecular quantum mechanics at the first-year graduate level. A working knowledge of traditional ab initio quantum chemistry is helpful, but not essential. Some distinguishing features of this book are: Clear exposition of the basic theory at a level to facilitate independent study.Discussion of the various versions of the theory: diffusion Monte Carlo, Green's function Monte Carlo, and release node Monte Carlo.Commentary on the important features that distinguish this stochastic approach from ab initio methods. Contents:Introduction to Monte Carlo MethodsVariational MethodsGreen's Function MethodsTreating FermionsVariational Trial FunctionsExcited StatesElectronic PropertiesDerivatives and Finite DifferencesHeavy AtomsAtomic UnitsEvaluating the Trial FunctionSample Diffusion Monte Carlo Program Readership: Chemists and physicists.

Author : Manoj Shukla,Jerzy Leszczynski
Publisher : Springer Science & Business Media
Page : 677 pages
File Size : 52,7 Mb
Release : 2008-05-08
Category : Science
ISBN : 9781402081842

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Radiation Induced Molecular Phenomena in Nucleic Acids by Manoj Shukla,Jerzy Leszczynski Pdf

Comprehensive theoretical and experimental analysis of UV-radiation and low energy electron induced phenomena in nucleic acid bases (NABs) and base assemblies are presented in this book. NABs are highly photostable; the absorbed energy is dissipated in the form of ultrafast nonradiative decay. This book highlights the possible mechanisms of these phenomena which is important for all living species and discusses technical challenges in exploration of these processes.