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This book is written for graduate students just beginning research, for theorists curious about what experimentalists actually can and do measure, and for experimentalists bewildered by theory. It is a guide for potential users of spectroscopic data, and uses language and concepts that bridge the frequency-and time-domain spectroscopic communities. Key topics, concepts, and techniques include: the assignment of simple spectra, basic experimental techniques, definition of Born-Oppenheimer and angular momentum basis sets and the associated spectroscopic energy level patterns (Hund's

Diatomic molecules. --- Molecular spectroscopy. --- Perturbation (Quantum dynamics) --- Perturbation theory, Quantum mechanical --- Perturbation (Mathematics) --- Quantum theory --- Spectroscopy, Molecular --- Spectrum analysis --- Molecular spectra --- Molecules

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Providing a new perspective on quantum field theory, this book gives a pedagogical and up-to-date exposition of non-perturbative methods in relativistic quantum field theory and introduces the reader to modern research work in theoretical physics. It describes in detail non-perturbative methods in quantum field theory, and explores two- dimensional and four- dimensional gauge dynamics using those methods. The book concludes with a summary emphasizing the interplay between two- and four- dimensional gauge theories. Aimed at graduate students and researchers, this book covers topics from two-dimensional conformal symmetry, affine Lie algebras, solitons, integrable models, bosonization, and 't Hooft model, to four-dimensional conformal invariance, integrability, large N expansion, Skyrme model, monopoles and instantons. Applications, first to simple field theories and gauge dynamics in two dimensions, and then to gauge theories in four dimensions and quantum chromodynamics (QCD) in particular, are thoroughly described.

Field theory (Physics) --- Perturbation (Quantum dynamics) --- Champs, Théorie des (Physique) --- Perturbation (Mécanique quantique) --- Perturbation theory, Quantum mechanical --- Perturbation (Mathematics) --- Quantum theory --- Classical field theory --- Continuum physics --- Physics --- Continuum mechanics

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Recently there has been much interest in studying events with tagged forward protons at the existing and forthcoming hadronic colliders, the Tevatron and the LHC. These studies not only allow one to monitor the luminosity of the colliding protons with high accuracy but also provide new ways of investigating the subtle issues of QCD dynamics and searches for the manifestations of new physics. This book reviews the state of the art of forward physics measurements and the theoretical development. It will catalyze many new approaches within the framework of the extensive physics programme of the...

Pomerons --- Quantum chromodynamics --- Perturbation (Quantum dynamics) --- Large Hadron Collider (France and Switzerland) --- Large Hadron Collider --- Hadron colliders --- Supercolliders --- Perturbation theory, Quantum mechanical --- Perturbation (Mathematics) --- Quantum theory --- Pomeranchuk particles --- Pomeranchuk poles --- Pomeranchuk trajectories --- Particles (Nuclear physics)

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"The use of laser pulses to alter the internal quantum structure of individual atoms and molecules has applications in quantum information processing, the coherent control of chemical reactions and in quantum-state engineering. This book presents the underlying theory of such quantum-state manipulation for researchers and graduate students. The book provides the equations, and approaches for their solution, which can be applied to complicated multilevel quantum systems. It also gives the background theory for application to isolated atoms or trapped ions, simple molecules and atoms embedded in solids. Particular attention is given to the ways in which quantum changes can be displayed graphically to help readers understand how quantum changes can be controlled"--

Nuclear excitation. --- Atomic structure. --- Coherent states. --- Perturbation (Quantum dynamics) --- Laser interferometry. --- Interferometry --- Perturbation theory, Quantum mechanical --- Perturbation (Mathematics) --- Quantum theory --- Coherence (Physics) --- Generalized coherent states --- States, Coherent --- Stochastic processes --- Structure, Atomic --- Atomic theory --- Excitation, Nuclear --- Energy levels (Quantum mechanics) --- Nuclear physics

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Written by two leading experts in the field, this book explores the 'many-body' methods that have become the dominant approach in determining molecular structure, properties and interactions. With a tight focus on the highly popular Many-Body Perturbation Theory (MBPT) and Coupled-Cluster theories (CC), the authors present a simple, clear, unified approach to describe the mathematical tools and diagrammatic techniques employed. Using this book the reader will be able to understand, derive and confidently implement relevant algebraic equations for current and even new multi-reference CC methods. Hundreds of diagrams throughout the book enhance reader understanding through visualization of computational procedures and extensive referencing allows further exploration of this evolving area. With an extensive bibliography and detailed index, this book will be suitable for graduates and researchers within quantum chemistry, chemical physics and atomic, molecular and solid-state physics.

Quantum mechanics. Quantumfield theory --- Fluid mechanics --- Nuclear physics --- Quantum chemistry --- Many-body problem --- Cluster theory (Nuclear physics) --- Perturbation (Quantum dynamics) --- Quantum chemistry. --- Many-body problem. --- Chimie quantique --- Problème des N corps --- Théorie des agrégats (Physique nucléaire) --- Perturbation (Mécanique quantique) --- Perturbation theory, Quantum mechanical --- Perturbation (Mathematics) --- Quantum theory --- Cluster phenomena (Nuclear physics) --- Clustering phenomena (Nuclear physics) --- Clusters (Nuclear physics) --- Nuclear clusters --- Nuclear structure --- n-body problem --- Problem of many bodies --- Problem of n-bodies --- Mechanics, Analytic --- Chemistry, Quantum --- Chemistry, Physical and theoretical --- Excited state chemistry