Semiclassical Dynamics And Relaxation

Author : D.S.F. Crothers
Publisher : Springer Science & Business Media
Page : 348 pages
File Size : 55,9 Mb
Release : 2007-12-20
Category : Science
ISBN : 9780387743134

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Semiclassical Dynamics and Relaxation by D.S.F. Crothers Pdf

Condensed-matter physics plays an ever increasing role in photonics, electronic and atomic collisions research. Dispersion (Dynamics and Relaxation) includes scattering/collisions in the gaseous phase. It also includes thermal agitation, tunneling and relaxation in the liquid and solid phases. Classical mechanics, classical statistical mechanics, classical relativity and quantum mechanics are all implicated. 'Semiclassical' essentially means that there is a large or asymptotic real parameter. 'Semiclassical' can also mean 'classical with first-order quantal correction', based on an exponentiated Liouville series commencing with a simple pole in the -plane, being Planck's reduced constant and coming with all the attendant connection problems associated with the singularity at the turning or transition point and with the Stokes phenomenon. Equally,' semiclassical' can mean 'electrons described quantally and the heavy particles classically'. This latter gives rise to the so-called impact parameter method based on a pre-assigned classical trajectory. With evermore sophisticated experiments, it has become equally more important to test theory over a wider range of parameters. For instance, at low impact energies in heavy-particle collisions, the inverse velocity is a large parameter; in single-domain ferromagnetism, thermal agitation (including Brownian motion and continuous-time random walks) is faced with a barrier of height 'sigma', a possibly large parameter. Methods of solution include phase-integral analysis, integral transforms and change-of-dependent variable. We shall consider the Schrödinger time-independent and time-dependent equations, the Dirac equation, the Fokker Planck equation, the Langevin equation and the equations of Einstein's classical general relativity equations. There is an increasing tendency among physicists to decry applied mathematics and theoretical physics in favour of computational blackboxes. One may say applied mathematics concerns hard sums and products (and their inverses) but unless one can simplify and sum infinite series of products of infinite series, can one believe the results of a computer program? The era of the polymath has passed; this book proposal aims to show the relevance to, and impact of theory on, laboratory scientists.

Author : Leonas Valkunas,Darius Abramavicius,Tomás Mancal
Publisher : John Wiley & Sons
Page : 414 pages
File Size : 47,8 Mb
Release : 2013-10-04
Category : Science
ISBN : 9783527653676

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Molecular Excitation Dynamics and Relaxation by Leonas Valkunas,Darius Abramavicius,Tomás Mancal Pdf

This work brings together quantum theory and spectroscopy to convey excitation processes to advanced students and specialists wishing to conduct research and understand the entire fi eld rather than just single aspects. Written by experienced authors and recognized authorities in the field, this text covers numerous applications and offers examples taken from different disciplines. As a result, spectroscopists, molecular physicists, physical chemists, and biophysicists will all fi nd this a must-have for their research. Also suitable as supplementary reading in graduate level courses.

Author : Irene Burghardt,V. May,David A. Micha,E. R. Bittner
Publisher : Springer Science & Business Media
Page : 476 pages
File Size : 53,7 Mb
Release : 2009-09-22
Category : Science
ISBN : 9783642023064

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Energy Transfer Dynamics in Biomaterial Systems by Irene Burghardt,V. May,David A. Micha,E. R. Bittner Pdf

The role of quantum coherence in promoting the e ciency of the initial stages of photosynthesis is an open and intriguing question. Lee, Cheng, and Fleming, Science 316, 1462 (2007) The understanding and design of functional biomaterials is one of today’s grand challenge areas that has sparked an intense exchange between biology, materials sciences, electronics, and various other disciplines. Many new - velopments are underway in organic photovoltaics, molecular electronics, and biomimetic research involving, e. g. , arti cal light-harvesting systems inspired by photosynthesis, along with a host of other concepts and device applications. In fact, materials scientists may well be advised to take advantage of Nature’s 3. 8 billion year head-start in designing new materials for light-harvesting and electro-optical applications. Since many of these developments reach into the molecular domain, the - derstanding of nano-structured functional materials equally necessitates f- damental aspects of molecular physics, chemistry, and biology. The elementary energy and charge transfer processes bear much similarity to the molecular phenomena that have been revealed in unprecedented detail by ultrafast op- cal spectroscopies. Indeed, these spectroscopies, which were initially developed and applied for the study of small molecular species, have already evolved into an invaluable tool to monitor ultrafast dynamics in complex biological and materials systems. The molecular-level phenomena in question are often of intrinsically quantum mechanical character, and involve tunneling, non-Born- Oppenheimer e ects, and quantum-mechanical phase coherence.

Author : Alan Lewis
Publisher : Springer
Page : 156 pages
File Size : 55,5 Mb
Release : 2018-09-12
Category : Science
ISBN : 9783030006860

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Spin Dynamics in Radical Pairs by Alan Lewis Pdf

This book sheds new light on the dynamical behaviour of electron spins in molecules containing two unpaired electrons (i.e. a radical pair). The quantum dynamics of these spins are made complicated by the interaction between the electrons and the many nuclear spins of the molecule; they are intractable using analytical techniques, and a naïve numerical diagonalization is not remotely possible using current computational resources. Hence, this book presents a new method for obtaining the exact quantum-mechanical dynamics of radical pairs with a modest number of nuclear spins. Readers will learn how a calculation that would take 13 years using conventional wavepacket propagation can now be done in 1 day, and will also discover a new semiclassical method for approximating the dynamics in the presence of many nuclear spins. The new methods covered in this book are shown to provide significant insights into three topical and diverse areas: charge recombination in molecular wires (which can be used in artificially mimicking photosynthesis), magnetoelectroluminescence in organic light-emitting diodes, and avian magnetoreception (how birds sense the Earth’s magnetic field in order to navigate).

Author : Stuart A. Rice,Aaron R. Dinner
Publisher : John Wiley & Sons
Page : 614 pages
File Size : 41,5 Mb
Release : 2013-03-19
Category : Science
ISBN : 9781118571750

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Advances in Chemical Physics, Volume 153 by Stuart A. Rice,Aaron R. Dinner Pdf

Detailed reviews of new and emerging topics in chemical physics presented by leading experts The Advances in Chemical Physics series is dedicated to reviewing new and emerging topics as well as the latest developments in traditional areas of study in the field of chemical physics. Each volume features detailed comprehensive analyses coupled with individual points of view that integrate the many disciplines of science that are needed for a full understanding of chemical physics. Volume 153 of Advances in Chemical Physics features six expertly written contributions: Recent advances of ultrafast X-ray absorption spectroscopy for molecules in solution Scaling perspective on intramolecular vibrational energy flow: analogies, insights, and challenges Longest relaxation time of relaxation processes for classical and quantum Brownian motion in a potential escape rate theory approach Local fluctuations in solution: theory and applications Macroscopic effects of microscopic heterogeneity Ab initio methodology for pseudospin Hamiltonians of anisotropic magnetic centers Reviews published in Advances in Chemical Physics are typically longer than those published in journals, providing the space needed for readers to fully grasp the topic: the fundamentals as well as the latest discoveries, applications, and emerging avenues of research. Extensive cross-referencing enables readers to explore the primary research studies underlying each topic. Advances in Chemical Physics is ideal for introducing novices to topics in chemical physics. Moreover, the series provides the foundation needed for more experienced researchers to advance their own research studies and continue to expand the boundaries of our knowledge in chemical physics.

Author : Kenny B. Lipkowitz,Thomas R. Cundari
Publisher : John Wiley & Sons
Page : 450 pages
File Size : 42,5 Mb
Release : 2007-11-02
Category : Science
ISBN : 9780470189061

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Reviews in Computational Chemistry, Volume 25 by Kenny B. Lipkowitz,Thomas R. Cundari Pdf

VOLUME 25 Reviews in Computational Chemistry Kenny B. Lipkowitz and Thomas R. Cundari This Volume, Like Those Prior To It, Features Pedagogically Driven Reviews By Experts In Various Fields Of Computational Chemistry. Volume 25 Contains: Eight Chapters Covering The Glass Transition In Polymer Melts, Atomistic Modeling Of Friction, The Computation Of Free Volume, Structural Order And Entropy Of Liquids And Glasses, The Reactivity Of Materials At Extreme Conditions, Magnetic Properties Of Transition Metal Clusters, Multiconfigurational Quantum Methods For The Treatment Of Heavy Metals, Recursive Solutions To Large Eigenvalue Problems, And The Development And Uses Of Artificial Intelligence In Chemistry. From Reviews of the Series "Reviews in Computational Chemistry remains the most valuable reference to methods and techniques in computational chemistry." -JOURNAL OF MOLECULAR GRAPHICS AND MODELLING "One cannot generally do better than to try to find an appropriate article in the highly successful Reviews in Computational Chemistry. The basic philosophy of the editors seems to be to help the authors produce chapters that are complete, accurate, clear, and accessible to experimentalists (in particular) and other nonspecialists (in general)." -JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Author : Asok K. Sen,Kamal K. Bardhan,Bikas K. Chakrabarti
Publisher : Springer Science & Business Media
Page : 334 pages
File Size : 49,7 Mb
Release : 2009-03-20
Category : Science
ISBN : 9783540854272

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Quantum and Semi-classical Percolation and Breakdown in Disordered Solids by Asok K. Sen,Kamal K. Bardhan,Bikas K. Chakrabarti Pdf

This lecture notes in physics volume mainly focuses on the semi classical and qu- tum aspects of percolation and breakdown in disordered, composite or granular s- tems. The main reason for this undertaking has been the fact that, of late, there have been a lot of (theoretical) work on quantum percolation, but there is not even a (single) published review on the topic (and, of course, no book). Also, there are many theoretical and experimental studies on the nonlinear current-voltage characteristics both away from, as well as one approaches, an electrical breakdown in composite materials. Some of the results are quite intriguing and may broadly be explained utilising a semi classical (if not, fully quantum mechanical) tunnelling between - cron or nano-sized metallic islands dispersed separated by thin insulating layers, or in other words, between the dangling ends of small percolation clusters. There have also been several (theoretical) studies of Zener breakdown in Mott or Anderson in- lators. Again, there is no review available, connecting them in any coherent fashion. A compendium volume connecting these experimental and theoretical studies should be unique and very timely, and hence this volume. The book is organised as follows. For completeness, we have started with a short and concise introduction on classical percolation. In the ?rst chapter, D. Stauffer reviews the scaling theory of classical percolation emphasizing (biased) diffusion, without any quantum effects. The next chapter by A. K.

Author : Ming-Fu Li
Publisher : World Scientific
Page : 528 pages
File Size : 44,6 Mb
Release : 2011-02-28
Category : Technology & Engineering
ISBN : 9781908978387

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Selected Semiconductor Research by Ming-Fu Li Pdf

This unique volume assembles the author's scientific and engineering achievements of the past three decades in the areas of (1) semiconductor physics and materials, including topics in deep level defects and band structures, (2) CMOS devices, including the topics in device technology, CMOS device reliability, and nano CMOS device quantum modeling, and (3) Analog Integrated circuit design. It reflects the scientific career of a semiconductor researcher educated in China during the 20th century. The book can be referenced by research scientists, engineers, and graduate students working in the areas of solid state and semiconductor physics and materials, electrical engineering and semiconductor devices, and chemical engineering. Contents: Defects in SemiconductorsSemiconductor Band StructuresAnalog Integrated Circuit DesignCMOS Device ReliabilityCMOS TechnologyNano CMOS Device Quantum Simulation Readership: Researchers, professors, graduate students, postdoctorates, engineers in the areas of solid state physics, semiconductor electron devices, materials science, chemical engineering, circuit design. Keywords:Semiconductors;Defects;CMOS Devices;Reliability;Si Technology;Quantum Simulations;Analog Circuits

Author : Qiang Cui,Ivet Bahar
Publisher : CRC Press
Page : 448 pages
File Size : 46,6 Mb
Release : 2005-12-12
Category : Mathematics
ISBN : 9781420035070

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Normal Mode Analysis by Qiang Cui,Ivet Bahar Pdf

Rapid developments in experimental techniques continue to push back the limits in the resolution, size, and complexity of the chemical and biological systems that can be investigated. This challenges the theoretical community to develop innovative methods for better interpreting experimental results. Normal Mode Analysis (NMA) is one such technique

Author : Stuart A. Rice
Publisher : John Wiley & Sons
Page : 558 pages
File Size : 54,5 Mb
Release : 2005-07-13
Category : Science
ISBN : 9780471445265

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Advances in Chemical Physics, Volume 131 by Stuart A. Rice Pdf

This series provides the chemical physics field with a forum for critical, authoritative evaluations of advances in every area of the discipline. Volume 131 includes chapters on: Polyelectrolyte Dynamics; Hydrodynamics and Slip at the Liquid-Solid Interface; Structure of Ionic Liquids and Ionic Liquid Compounds: Are Ionic Liquids Genuine Liquids in the Conventional Sense?; Chemical Reactions at Very High Pressure; Classical Description of Nonadiabatic Quantum Dynamics; and Non-Born Oppenheimer Variational Calculations of Atoms and Molecules with Explicitly Correlated Gaussian Basis Functions.

Author : Mauro Ferrario,Giovanni Ciccotti,Kurt Binder
Publisher : Springer
Page : 712 pages
File Size : 44,5 Mb
Release : 2007-03-09
Category : Science
ISBN : 9783540352730

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Computer Simulations in Condensed Matter: From Materials to Chemical Biology. Volume 1 by Mauro Ferrario,Giovanni Ciccotti,Kurt Binder Pdf

This comprehensive collection of lectures by leading experts in the field introduces and reviews all relevant computer simulation methods and their applications in condensed matter systems. Volume 1 is an in-depth introduction to a vast spectrum of computational techniques for statistical mechanical systems of condensed matter. Volume 2 is a collection of state-of-the-art surveys on numerical experiments carried out for a great number of systems.

Author : Anonim
Publisher : Unknown
Page : 852 pages
File Size : 53,6 Mb
Release : 1990
Category : Power resources
ISBN : MSU:31293010869307

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Energy Research Abstracts by Anonim Pdf

Author : Ilya Prigogine,W. Horton,Y. Ichikawa,G. Zaslavsky
Publisher : Springer Science & Business Media
Page : 480 pages
File Size : 43,7 Mb
Release : 1992-10-31
Category : Science
ISBN : 0883189232

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Chaotic Dynamics and Transport in Fluids and Plasmas by Ilya Prigogine,W. Horton,Y. Ichikawa,G. Zaslavsky Pdf

Market: Students and researchers in chaos, plasma physics, and fluid transport. This superb collection of invited papers offers an excellent overview of the current status and future trends in chaotic dynamics, plasma and fluid physics, nonlinear phenomena and chaos, and transport and turbulence studies.

Author : Junko Habasaki,Carlos Leon,K.L. Ngai
Publisher : Springer
Page : 600 pages
File Size : 45,9 Mb
Release : 2016-10-19
Category : Science
ISBN : 9783319423913

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Dynamics of Glassy, Crystalline and Liquid Ionic Conductors by Junko Habasaki,Carlos Leon,K.L. Ngai Pdf

This book discusses the physics of the dynamics of ions in various ionically conducting materials, and applications including electrical energy generation and storage. The experimental techniques for measurements and characterization, molecular dynamics simulations, the theories of ion dynamics, and applications are all addressed by the authors, who are experts in their fields. The experimental techniques of measurement and characterization of dynamics of ions in glassy, crystalline, and liquid ionic conductors are introduced with the dual purpose of introducing the reader to the experimental activities of the field, and preparing the reader to understand the physical quantities derived from experiments. These experimental techniques include calorimetry, conductivity relaxation, nuclear magnetic resonance, light scattering, neutron scattering, and others. Methods of molecular dynamics simulations are introduced to teach the reader to utilize the technique for practical applications to specific problems. The results elucidate the dynamics of ions on some issues that are not accessible by experiments. The properties of ion dynamics in glassy, crystalline and liquid ionic conductors brought forth by experiments and simulations are shown to be universal, i.e. independent of physical and chemical structure of the ionic conductor as long as ion-ion interaction is the dominant factor. Moreover these universal properties of ion dynamics are shown to be isomorphic to other complex interacting systems including the large class of glass-forming materials with or without ionic conductivity.By covering the basic concepts, theories/models, experimental techniques and data, molecular dynamics simulations, and relating them together, Dynamics of Glassy, Crystalline and Liquid Ionic Conductors will be of great interest to many in basic and applied research areas from the broad and diverse communities of condensed matter physicists, chemists, materials scientists and engineers. The book also provides the fundamentals for an introduction to the field and it is written in such a way that can be used for teaching courses either at the undergraduate or graduate level in academic institutions.

Author : John Frederick Clarke,Malcolm McChesney
Publisher : Unknown
Page : 600 pages
File Size : 45,6 Mb
Release : 1975
Category : Gas dynamics
ISBN : UCAL:B4513902

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Dynamics of Relaxing Gases by John Frederick Clarke,Malcolm McChesney Pdf