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Semiclassical Dynamics And Relaxation
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Book Synopsis Semiclassical Dynamics and Relaxation by : D.S.F. Crothers
Download or read book Semiclassical Dynamics and Relaxation written by D.S.F. Crothers and published by Springer Science & Business Media. This book was released on 2007-12-20 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Molecular Excitation Dynamics and Relaxation by : Leonas Valkunas
Download or read book Molecular Excitation Dynamics and Relaxation written by Leonas Valkunas and published by John Wiley & Sons. This book was released on 2013-10-04 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Spin Dynamics in Radical Pairs by : Alan Lewis
Download or read book Spin Dynamics in Radical Pairs written by Alan Lewis and published by Springer. This book was released on 2018-09-12 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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).
Book Synopsis Advances in Chemical Physics, Volume 153 by : Stuart A. Rice
Download or read book Advances in Chemical Physics, Volume 153 written by Stuart A. Rice and published by John Wiley & Sons. This book was released on 2013-03-19 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Reviews in Computational Chemistry, Volume 25 by : Kenny B. Lipkowitz
Download or read book Reviews in Computational Chemistry, Volume 25 written by Kenny B. Lipkowitz and published by John Wiley & Sons. This book was released on 2007-11-02 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Book Synopsis Quantum and Semi-classical Percolation and Breakdown in Disordered Solids by : Asok K. Sen
Download or read book Quantum and Semi-classical Percolation and Breakdown in Disordered Solids written by Asok K. Sen and published by Springer Science & Business Media. This book was released on 2009-03-20 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Normal Mode Analysis written by Qiang Cui and published by CRC Press. This book was released on 2005-12-12 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Book Synopsis Selected Semiconductor Research by : Ming-Fu Li
Download or read book Selected Semiconductor Research written by Ming-Fu Li and published by World Scientific. This book was released on 2011-02-28 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Book Synopsis Computer Simulations in Condensed Matter: From Materials to Chemical Biology. Volume 1 by : Mauro Ferrario
Download or read book Computer Simulations in Condensed Matter: From Materials to Chemical Biology. Volume 1 written by Mauro Ferrario and published by Springer. This book was released on 2007-03-09 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Advances in Chemical Physics, Volume 131 by : Stuart A. Rice
Download or read book Advances in Chemical Physics, Volume 131 written by Stuart A. Rice and published by John Wiley & Sons. This book was released on 2005-07-13 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1988 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Chaotic Dynamics and Transport in Fluids and Plasmas by : Ilya Prigogine
Download or read book Chaotic Dynamics and Transport in Fluids and Plasmas written by Ilya Prigogine and published by Springer Science & Business Media. This book was released on 1992-10-31 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Hot Carriers in Semiconductors by : Karl Hess
Download or read book Hot Carriers in Semiconductors written by Karl Hess and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 575 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains invited and contributed papers of the Ninth International Conference on Hot Carriers in Semiconductors (HCIS-9), held July 3 I-August 4, 1995 in Chicago, Illinois. In all, the conference featured 15 invited oral presentations, 60 contributed oral presentations, and 105 poster presentations, and an international contingent of 170 scientists. As in recent conferences, the main themes of the conference were related to nonlinear transport in semiconductor heterojunctions and included Bloch oscillations, laser diode structures, and femtosecond spectroscopy. Interesting questions related to nonlinear transport, size quantization, and intersubband scattering were addressed that are relevant to the new quantum cascade laser. Many lectures were geared toward quantum wires and dots and toward nanostructures and mesoscopic systems in general. It is expected that such research will open new horizons to nonlinear transport studies. An attempt was made by the program committee to increase the number of presen tations related directly to devices. The richness of nonlocal hot electron effects that were discussed as a result, in our opinion, suggests that future conferences should further encourage reports on such device research. On behalf of the Program and International Advisory Committees, we thank the participants, who made the conference a successful and pleasant experience, and the support of the Army Research Office, the Office of Naval Research, and the Beckman Institute of the University of Illinois at Urbana-Champaign. We are also indebted to Mrs. Sara Starkey and Mrs.
Book Synopsis Dielectric Relaxation and Dynamics of Polar Molecules by : Vladimir I. Ga?duk
Download or read book Dielectric Relaxation and Dynamics of Polar Molecules written by Vladimir I. Ga?duk and published by World Scientific. This book was released on 1999 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: The topics covered in this book provide a qualitative and sometimes quantitative classic description of the wide-band 0-THz dielectric spectra of polar liquids, molecular libration-rotation (which is the reason for dielectric loss and absorption of electromagnetic waves), simple molecular models differing by the intermolecular-potential profiles, and present a comparison between the theoretical and experimental dependencies and derivation of the main results. A new feature is the application of a number of analytical models to different substances, including strongly absorbing nonassociating liquids, liquid water, water bound by macromolecules, and gas-like liquids. The presentation of the theory in this book is also new. It is based on the dynamic method in which the Brownian reorientations are considered implicitly, without direct solution of stochastic equations. This approach simplifies the theory. Senior students and experimentalists will find many of the results valuable.
Book Synopsis Classical and Quantum Molecular Dynamics in NMR Spectra by : Sławomir Szymański
Download or read book Classical and Quantum Molecular Dynamics in NMR Spectra written by Sławomir Szymański and published by Springer. This book was released on 2018-05-24 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book provides a detailed account of how condensed-phase molecular dynamics are reflected in the line shapes of NMR spectra. The theories establishing connections between random, time-dependent molecular processes and lineshape effects are exposed in depth. Special emphasis is placed on the theoretical aspects, involving in particular intermolecular processes in solution, and molecular symmetry issues. The Liouville super-operator formalism is briefly introduced and used wherever it is beneficial for the transparency of presentation. The proposed formal descriptions of the discussed problems are sufficiently detailed to be implemented on a computer. Practical applications of the theory in solid- and liquid-phase studies are illustrated with appropriate experimental examples, exposing the potential of the lineshape method in elucidating molecular dynamics NMR-observable molecular phenomena where quantization of the spatial nuclear degrees of freedom is crucial are addressed in the last part of the book. As an introduction to this exciting research field, selected aspects of the quantum mechanics of isolated systems undergoing rotational tunnelling are reviewed, together with some basic information about quantum systems interacting with their condensed environment. The quantum theory of rate processes evidenced in the NMR lineshapes of molecular rotors is presented, and illustrated with appropriate experimental examples from both solid- and liquid-phase spectra. In this context, the everlasting problem of the quantum-to-classical transition is discussed at a quantitative level. The book will be suitable for graduate students and new and practising researchers using NMR techniques.
Book Synopsis Photosynthetic Reaction Center by : Johann Deisenhofer
Download or read book Photosynthetic Reaction Center written by Johann Deisenhofer and published by Academic Press. This book was released on 2013-10-22 with total page 593 pages. Available in PDF, EPUB and Kindle. Book excerpt: The availability of the photosynthetic reaction center's structure at an atomic resolution of less than three angstroms has revolutionized research. This protein is the first integral membrane protein whose structure has been determined with such precision. Each volume of the Photosynthetic Reaction Center contains original research, methods, and reviews. Together, these volumes cover our current understanding of how photosynthesis converts light energy into stored chemical energy. Volume II details the electron transfer process; it is oriented to the physical aspects of photosynthesis. It thus primarily discusses bacterial photosynthesis and model compounds. Volume II features the very complex and rapidly evolving issues associated with the theory of electron transfer in the bacterial reaction center, and explores picosecond and femtosecond spectroscopy. This volume also covers holeburning spectroscopy; primary events of bacterial photosynthesis with emphasis on the application of large, external electric fields designed to manipulate and probe mechanisms of the initial chemistry; the role of accessory carotenoid pigments; the techniques of infrared spectroscopy and magnetic resonance as applied to photosynthesis; and the interplay between natural and artificial photosynthesis.
Book Synopsis Relaxation Phenomena in Condensed Matter by : William T. Coffey
Download or read book Relaxation Phenomena in Condensed Matter written by William T. Coffey and published by John Wiley & Sons. This book was released on 2009-09-09 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt: Russian contributors provide a synthesis of ideas drawn from dielectric, magnetic and elastic relaxation. Divided into three sections, the book commences with dielectric and related processes in simple liquids. Part two deals with the structure and dielectric relaxation of aqueous solutions. Lastly, it addresses magnetic and dielectric relaxation in liquid crystals and elastic relaxation in orientable polymers.
