The Semiclassical Way To Dynamics And Spectroscopy

The Semiclassical Way to Dynamics and Spectroscopy PDF
Author: Eric J. Heller
Publisher: Princeton University Press
ISBN: 1400890292
Size: 35.30 MB
Format: PDF, Docs
Category : Science
Languages : en
Pages : 480
View: 7415

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A graduate-level text that examines the semiclassical approach to quantum mechanics Physical systems have been traditionally described in terms of either classical or quantum mechanics. But in recent years, semiclassical methods have developed rapidly, providing deep physical insight and computational tools for quantum dynamics and spectroscopy. In this book, Eric Heller introduces and develops this subject, demonstrating its power with many examples. In the first half of the book, Heller covers relevant aspects of classical mechanics, building from them the semiclassical way through the semiclassical limit of the Feynman path integral. The second half of the book applies this approach to various kinds of spectroscopy, such as molecular spectroscopy and electron imaging and quantum dynamical systems with an emphasis on tunneling. Adopting a distinctly time-dependent viewpoint, Heller argues for semiclassical theories from experimental and theoretical vantage points valuable to research in physics and chemistry. Featuring more than two hundred figures, the book provides a geometric, phase-space, and coordinate-space pathway to greater understanding. Filled with practical examples and applications, The Semiclassical Way to Dynamics and Spectroscopy is a comprehensive presentation of the tools necessary to successfully delve into this unique area of quantum mechanics. A comprehensive approach for using classical mechanics to do quantum mechanics More than two hundred figures to assist intuition Emphasis on semiclassical Green function and wave packet perspective, as well as tunneling and spectroscopy Chapters include quantum mechanics of classically chaotic systems, quantum scarring, and other modern dynamical topics

The Semiclassical Way To Dynamics And Spectroscopy

The Semiclassical Way to Dynamics and Spectroscopy PDF
Author: Eric J. Heller
Publisher: Princeton University Press
ISBN: 0691163731
Size: 40.67 MB
Format: PDF, Docs
Category : Science
Languages : en
Pages : 472
View: 4530

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A graduate-level text that examines the semiclassical approach to quantum mechanics Physical systems have been traditionally described in terms of either classical or quantum mechanics. But in recent years, semiclassical methods have developed rapidly, providing deep physical insight and computational tools for quantum dynamics and spectroscopy. In this book, Eric Heller introduces and develops this subject, demonstrating its power with many examples. In the first half of the book, Heller covers relevant aspects of classical mechanics, building from them the semiclassical way through the semiclassical limit of the Feynman path integral. The second half of the book applies this approach to various kinds of spectroscopy, such as molecular spectroscopy and electron imaging and quantum dynamical systems with an emphasis on tunneling. Adopting a distinctly time-dependent viewpoint, Heller argues for semiclassical theories from experimental and theoretical vantage points valuable to research in physics and chemistry. Featuring more than two hundred figures, the book provides a geometric, phase-space, and coordinate-space pathway to greater understanding. Filled with practical examples and applications, The Semiclassical Way to Dynamics and Spectroscopy is a comprehensive presentation of the tools necessary to successfully delve into this unique area of quantum mechanics. A comprehensive approach for using classical mechanics to do quantum mechanics More than two hundred figures to assist intuition Emphasis on semiclassical Green function and wave packet perspective, as well as tunneling and spectroscopy Chapters include quantum mechanics of classically chaotic systems, quantum scarring, and other modern dynamical topics

Classical Semiclassical And Quantum Dynamics In Atoms

Classical  Semiclassical and Quantum Dynamics in Atoms PDF
Author: Harald Friedrich
Publisher: Springer
ISBN: 9783662141526
Size: 40.16 MB
Format: PDF, Mobi
Category : Science
Languages : en
Pages : 344
View: 2195

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In this book, a number of the world's leading researchers in quantum, classical and atomic physics cooperate to present an up-to-date account of the recent progress in the field. The first part highlights the latest advances in semiclassical theory, whilst the second one is devoted to applications to atomic systems. The authors present the material in pedagogical form to make it easy reading for non-specialists, too. Among the topics treated, the reader will find a new quasiclassical quantization scheme for Hamiltonian dynamics, an application of the semiclassical formalism to photodissociation of small molecules and to the Lorentz gas and discussions of tunneling corrections. Furthermore, one finds papers on chaotic ionization, on the behaviour of hydrogen atoms in external fields, e.g. magnetic or microwave fields.

Our Changing Views Of Photons

Our Changing Views of Photons PDF
Author: Bruce W. Shore
Publisher: Oxford University Press
ISBN: 0192607650
Size: 79.63 MB
Format: PDF, ePub
Category : Science
Languages : en
Pages : 399
View: 4621

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Advances in technology often rely on a world of photons as the basic units of light. Increasingly one reads of photons as essential to enterprises in Photonics and Quantum Technology, with career and investment opportunities. Notions of photons have evolved from the energy-packet crowds of Planck and Einstein, the later field modes of Dirac, the seeming conflict of wave and particle photons, to the ubiquitous laser photons of today. Readers who take interest in contemporary technology will benefit from learning what photons are now considered to be, and how our views of photons have changed — in learning about the various operational definitions that have been used for photons and their association with a variety of quantum-state manipulations that include Quantum Information, astronomical sources and crowds of photons, the boxed fields of Cavity Quantum Electrodynamics and single photons on demand, the photons of Feynman and Glauber, and the photon constituents of the Standard Model of Particle Physics. The narrative points to contemporary photons as causers of change to atoms, as carriers of messages, and as subject to controllable creation and alteration — a considerable diversity of photons, not just one kind. Our Changing Views of Photons: A Tutorial Memoir presents those general topics as a memoir of the author's involvement with physics and the photons of theoretical Quantum Optics, written conversationally for readers with no assumed prior exposure to science. It offers lay readers a glimpse of scientific discovery — of how ideas become practical, as a small scientific community reconsiders its assumptions and offers the theoretical ideas that are then developed, revised, and adopted into technology for daily use. For readers who want a more detailed understanding of the theory, three substantial appendices provide tutorials that, assuming no prior familiarity, proceed from a very elementary start to basics of discrete states and abstract vector spaces; Lie groups; notions of quantum theory and the Schrödinger equation for quantum-state manipulation; Maxwell's equations for electromagnetism, with wave modes that become photons, possibly exhibiting quantum entanglement; and the coupling of atoms and fields to create quasiparticles. The appendices can be seen as a companion to traditional textbooks on Quantum Optics.

Nanophysik Und Nanotechnologie

Nanophysik und Nanotechnologie PDF
Author: Edward L. Wolf
Publisher: John Wiley & Sons
ISBN: 3527687386
Size: 36.43 MB
Format: PDF, Docs
Category : Technology & Engineering
Languages : de
Pages : 328
View: 3436

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Noch hat das Motto “Alles muss kleiner werden” nicht an Faszination verloren. Physikern, Ingenieuren und Medizinern erschließt sich mit der Nanotechnologie eine neue Welt mit faszinierenden Anwendungen. E.L. Wolf, Physik-Professor in Brooklyn, N.Y., schrieb das erste einführende Lehrbuch zu diesem Thema, in dem er die physikalischen Grundlagen ebenso wie die Anwendungsmöglichkeiten der Nanotechnologie diskutiert. Mittlerweile ist es in der 3. Aufl age erschienen und liegt jetzt endlich auch auf Deutsch vor. Dieses Lehrbuch bietet eine einzigartige, in sich geschlossene Einführung in die physikalischen Grundlagen und Konzepte der Nanowissenschaften sowie Anwendungen von Nanosystemen. Das Themenspektrum reicht von Nanosystemen über Quanteneff ekte und sich selbst organisierende Strukturen bis hin zu Rastersondenmethoden. Besonders die Vorstellung von Nanomaschinen für medizinische Anwendungen ist faszinierend, wenn auch bislang noch nicht praktisch umgesetzt. Der dritten Aufl age, auf der diese Übersetzung beruht, wurde ein neuer Abschnitt über Graphen zugefügt. Die Diskussion möglicher Anwendungen in der Energietechnik, Nanoelektronik und Medizin wurde auf neuesten Stand gebracht und wieder aktuelle Beispiele herangezogen, um wichtige Konzepte und Forschungsinstrumente zu illustrieren. Der Autor führt mit diesem Lehrbuch Studenten der Physik, Chemie sowie Ingenieurwissenschaften von den Grundlagen bis auf den Stand der aktuellen Forschung. Die leicht zu lesende Einführung in dieses faszinierende Forschungsgebiet ist geeignet für fortgeschrittene Bachelor- und Masterstudenten mit Vorkenntnissen in Physik und Chemie. Stimmen zur englischen Vorauflage „Zusammenfassend ist festzustellen, dass Edward L. Wolf trotz der reichlich vorhandenen Literatur zur Nanotechnologie ein individuell gestaltetes einführendes Lehrbuch gelungen ist. Es eignet sich – nicht zuletzt dank der enthaltenen Übungsaufgaben – bestens zur Vorlesungsbegleitung für Studierende der Natur- und Ingenieurwissenschaften sowie auch spezieller nanotechnologisch orientierter Studiengänge.“ Physik Journal „... eine sehr kompakte, lesenswerte und gut verständliche Einführung in die Quantenmechanik sowie ihre Auswirkungen auf die Materialwissenschaften ...“ Chemie Ingenieur Technik

Coherent Dynamics Of Small Molecules In Rare Gas Crystals

Coherent dynamics of small molecules in rare gas crystals PDF
Author:
Publisher: Cuvillier Verlag
ISBN: 3736914113
Size: 62.72 MB
Format: PDF, ePub, Mobi
Category : Science
Languages : de
Pages : 192
View: 4490

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The book presents a systematic study of coherent phenomena in molecule doped rare gas crystals, examplified on bromine and iodine molecules in solid argon and krypton. Ultrashort laser pulses are applied to prepare vibrational wave packets on the molecules. Their dynamics is investigated via the pump-probe method. The priniples of classical and quantum mechanical coherence are introduced in the first chapters together with the concepts of wave packet focusing and fractional revivals. Those are used to deduce the vibrational and electronic decoherence of molecular wave packets in the rare gas host. A novel coherent control scheme based on chirped laser pulse excitation is worked out to manipulate the wave packets. Furthermore, the molecular energy relaxation and the rotational behaviour in the rare gas host are discussed. Apart from the molecular wave packets, coherent phonons of the rare gas crystal are investigated via the pump-probe spectroscopy on the molecule. Those phonons are excited impulsively in a molecular electronic transition and modulate the host density close to the molecule. Due to the special probe situation, only coherent zone boundary phonons show up in the transients.

Quantum Chemistry And Dynamics Of Excited States

Quantum Chemistry and Dynamics of Excited States PDF
Author: Roland Lindh
Publisher: John Wiley & Sons
ISBN: 1119417740
Size: 26.63 MB
Format: PDF, Kindle
Category : Science
Languages : en
Pages : 688
View: 5189

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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.

Global Minimization Of Nonconvex Energy Functions

Global Minimization of Nonconvex Energy Functions PDF
Author: Panos M. Pardalos
Publisher: American Mathematical Soc.
ISBN: 9780821870693
Size: 43.15 MB
Format: PDF
Category : Science
Languages : en
Pages : 271
View: 2540

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This book contains refereed papers presented at a remarkable interdisciplinary scientific meeting attended by a mix of leading biochemists and computer scientists held at DIMACS in March 1995. It describes the development of a variety og new methods which are being developed for attacking the important problem of molecular structure.