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Comportement Des Systemes De Reference Quantiques
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Book Synopsis Comportement des systèmes de référence quantiques by : Mychel Pineault
Download or read book Comportement des systèmes de référence quantiques written by Mychel Pineault and published by Editions Universitaires Europeennes. This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: La dégradation des états quantiques est très présente dans le contrôle d'états utiles à l'informatique quantique. Étant donné que ce dernier tente de contrôler des systèmes à deux états, le plus souvent des moments cinétiques, l'analyse des systèmes de référence quantiques qui les mesurent s'avère opportune. Puisque, parmi les plus petits moments cinétiques, le plus connu est de s = 1/2 et que son état le plus simple est l'état non polarisé, l'étude du comportement d'un système de référence mesurant successivement ce type de moments cinétiques constitue le premier pas à franchir. La prochaine étape est de considérer des états de moments cinétiques polarisés et généraux. Cette fois, l'analyse de la dégradation du système de référence est un peu plus complexe et nous pouvons l'inspecter approximativement par l'évolution de certains paramètres pour une certaine classe d'états de système de référence. De plus, il existe une interaction entre le système de référence et le moment cinétique qui peut avoir un effet sur le système de référence tout à fait comparable à l'effet de la mesure. Toutefois, cette même interaction n'est pas comparable à la mesure dans le cas où s=1.
Book Synopsis Comportement Des Systèmes de Référence Quantiques Pour Le Moment Cinétique by : Mychel Pineault
Download or read book Comportement Des Systèmes de Référence Quantiques Pour Le Moment Cinétique written by Mychel Pineault and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Lectures on Probability Theory by : Philippe Biane
Download or read book Lectures on Probability Theory written by Philippe Biane and published by Springer. This book was released on 2006-11-14 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains two of the three lectures given at the Saint-Flour Summer School of Probability Theory during the period August 18 to September 4, 1993.
Book Synopsis Quelques aspects du chaos quantique dans les systèmes de N-corps en interaction by : Yasar Yilmaz Atas
Download or read book Quelques aspects du chaos quantique dans les systèmes de N-corps en interaction written by Yasar Yilmaz Atas and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mon travail de thèse est consacré à l'étude de quelques aspects de la physique quantique des systèmes quantiques à N corps en interaction. Il est orienté vers l'étude des chaînes de spins quantiques. Je me suis intéressé à plusieurs questions relatives aux chaînes de spins quantiques, du point de vue numérique et analytique à la fois. J'aborde en particulier les questions relatives à la structure des fonctions d'onde, la forme de la densité d'états et les propriétés spectrales des Hamiltoniens de chaînes de spins. Dans un premier temps, je présenterais très rapidement les techniques numériques de base pour le calcul des vecteurs et valeurs propres des Hamiltonien de chaînes de spins. Les densités d'états des modèles quantiques constituent des quantités importantes et très simples qui permettent de caractériser les propriétés spectrales des systèmes avec un grand nombre de degrés de liberté. Alors que dans la limite thermodynamique, les densités d'états de la plupart des modèles intégrables sont bien décrites par une loi gaussienne, dans certaines limites de couplage de la chaîne de spins au champ magnétique et pour un nombre de spins N fini sur la chaîne, on observe l'apparition de pics dans la densité d'états. Je montrerais que la connaissance des deux premiers moments du Hamiltonien dans le sous-espace dégénéré associé à chaque pics donne une bonne approximation de la densité d'états. Dans un deuxième temps je m'intéresserais aux propriétés spectrales des Hamiltoniens de chaînes de spins quantiques. L'un des principal résultats sur la statistique spectrale des systèmes quantiques concerne le comportement universel des fluctuations des mesures telles que l'espacement entre valeurs propres consécutives. Ces fluctuations sont bien décrites par la théorie des matrices aléatoires mais la comparaison avec les prédictions de cette théorie nécessite généralement une opération sur le spectre du Hamiltonien appelée unfolding. Dans les problèmes quantiques de N corps, la taille de l'espace de Hilbert croît généralement exponentiellement avec le nombre de particules, entraînant un manque de données pour pouvoir faire une statistique. Ces limitations ont amené l'introduction d'une nouvelle mesure se passant de la procédure d'unfolding basée sur le rapport d'espacements successifs plutôt que les espacements. En suivant l'idée du “surmise” de Wigner pour le calcul de la distribution de l'espacement, je montre comment calculer une approximation de la distribution du rapport d'espacements dans les trois ensembles gaussiens invariants en faisant le calcul pour des matrices 3x3. Les résultats obtenus pour les différents ensembles de matrices aléatoires se sont révélés être en excellent accord avec les résultats numériques. Enfin je m'intéresserais à la structure des fonctions d'ondes fondamentales des modèles de chaînes de spins quantiques. Les fonctions d'onde constituent, avec le spectre en énergie, les objets fondamentaux des systèmes quantiques : leur structure est assez compliquée et n'est pas très bien comprise pour la plupart des systèmes à N corps. En raison de la croissance exponentielle de la taille de l'espace de Hilbert avec le nombre de particules, l'étude des vecteurs propres est une tâche très difficile, non seulement du point de vue analytique mais aussi du point de vue numérique. Je démontrerais en particulier que l'état fondamental de tous les modèles que nous avons étudiés est multifractal avec en général une dimension fractale non triviale.
Book Synopsis Chaos Et Physique Quantique by : Marie-Joya Giannoni
Download or read book Chaos Et Physique Quantique written by Marie-Joya Giannoni and published by North Holland. This book was released on 1991 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents the current state of knowledge and the emerging lines of research on the following question: Can one identify in quantum systems fingerprints of the completely or partially chaotic behaviour of the underlying classical dynamics? quantum mechanics has advanced tremendously and the following broad themes are dealt with in this book: - physics, now the standard for analysing signatures of classical chaos in quantum systems; localization phenomena; on negatively curved compact manifolds; microscopic media: nuclear, atomic, molecular, solid-state physics
Book Synopsis Erwin Schrodinger by : Michel Bitbol
Download or read book Erwin Schrodinger written by Michel Bitbol and published by Atlantica Séguier Frontières. This book was released on 1992 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Spectroscopic Data Relative to Diatomic Molecules by : B. Rosen
Download or read book Spectroscopic Data Relative to Diatomic Molecules written by B. Rosen and published by Elsevier. This book was released on 2013-09-24 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spectroscopic Data Relative to Diatomic Molecules provides information pertinent to the electronic spectrum and spectroscopic properties of diatomic molecules. This book consists of a collection of tables that mainly deal with electronic spectra located in the infrared, the visible and the ultraviolet. Thermochemical data have been used in this book to make estimates of dissociation energies while results from electron diffraction experiments have been used to determine internuclear distances. This text provides information regarding potential energy curves, ionization potential, correlations with atomic states, electronic configuration, lifetimes, transition probabilities, astrophysical applications, and chemical physics. This book is a valuable resource for spectroscopists.
Author : Publisher :Odile Jacob ISBN 13 :273819382X Total Pages :270 pages Book Rating :4.7/5 (381 download)
Download or read book written by and published by Odile Jacob. This book was released on with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Spectroscopie Atomique Et Moléculaire, Par P. Barchewitz by : Pierre Barchewitz
Download or read book Spectroscopie Atomique Et Moléculaire, Par P. Barchewitz written by Pierre Barchewitz and published by . This book was released on 1970 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Quantum Mechanics, Volume 3 by : Claude Cohen-Tannoudji
Download or read book Quantum Mechanics, Volume 3 written by Claude Cohen-Tannoudji and published by John Wiley & Sons. This book was released on 2019-12-16 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new, third volume of Cohen-Tannoudji's groundbreaking textbook covers advanced topics of quantum mechanics such as uncorrelated and correlated identical particles, the quantum theory of the electromagnetic field, absorption, emission and scattering of photons by atoms, and quantum entanglement. Written in a didactically unrivalled manner, the textbook explains the fundamental concepts in seven chapters which are elaborated in accompanying complements that provide more detailed discussions, examples and applications. * Completing the success story: the third and final volume of the quantum mechanics textbook written by 1997 Nobel laureate Claude Cohen-Tannoudji and his colleagues Bernard Diu and Franck Laloë * As easily comprehensible as possible: all steps of the physical background and its mathematical representation are spelled out explicitly * Comprehensive: in addition to the fundamentals themselves, the books comes with a wealth of elaborately explained examples and applications Claude Cohen-Tannoudji was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris where he also studied and received his PhD in 1962. In 1973 he became Professor of atomic and molecular physics at the Collège des France. His main research interests were optical pumping, quantum optics and atom-photon interactions. In 1997, Claude Cohen-Tannoudji, together with Steven Chu and William D. Phillips, was awarded the Nobel Prize in Physics for his research on laser cooling and trapping of neutral atoms. Bernard Diu was Professor at the Denis Diderot University (Paris VII). He was engaged in research at the Laboratory of Theoretical Physics and High Energy where his focus was on strong interactions physics and statistical mechanics. Franck Laloë was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris. His first assignment was with the University of Paris VI before he was appointed to the CNRS, the French National Research Center. His research was focused on optical pumping, statistical mechanics of quantum gases, musical acoustics and the foundations of quantum mechanics.
Download or read book Neural Networks written by Gérard Dreyfus and published by Springer Science & Business Media. This book was released on 2005-11-25 with total page 509 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neural networks represent a powerful data processing technique that has reached maturity and broad application. When clearly understood and appropriately used, they are a mandatory component in the toolbox of any engineer who wants make the best use of the available data, in order to build models, make predictions, mine data, recognize shapes or signals, etc. Ranging from theoretical foundations to real-life applications, this book is intended to provide engineers and researchers with clear methodologies for taking advantage of neural networks in industrial, financial or banking applications, many instances of which are presented in the book. For the benefit of readers wishing to gain deeper knowledge of the topics, the book features appendices that provide theoretical details for greater insight, and algorithmic details for efficient programming and implementation. The chapters have been written by experts and edited to present a coherent and comprehensive, yet not redundant, practically oriented introduction.
Book Synopsis Bibliographic Guide to Refrigeration 1965–1968 by : Sam Stuart
Download or read book Bibliographic Guide to Refrigeration 1965–1968 written by Sam Stuart and published by Elsevier. This book was released on 2013-10-22 with total page 649 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bibliographic Guide to Refrigeration 1965-1968 is a bibliographic guide to all the documents abstracted in the International Institute of Refrigeration Bulletin during the period 1965-1968. The references include nearly 7,000 reports, articles, and communications, classified according to subjects, and followed by a listing of books. This book is divided into 10 parts and begins with a listing of references on thermodynamics, heat transfer, and other basic physical phenomena relating to refrigeration, including desiccation and measurements of temperature, humidity, and pressure. The next sections are devoted to the physics of low temperatures and cryogenics; production and distribution of cold; refrigerating plants (mainly in the food domain); and refrigerated transport and packaging. Other references deal with air conditioning and heat pumps; and industrial, biological, medical, and agricultural applications of refrigeration. The final section focuses on standards and regulations, economics and statistics, and education and trade activities in the refrigeration industry. This guide is intended to assist researchers, engineers, manufacturers, and operators who are in either constant or occasional contact with the refrigeration domain.
Book Synopsis Séminaire de Probabilités XXXVI by : Jacques Azéma
Download or read book Séminaire de Probabilités XXXVI written by Jacques Azéma and published by Springer. This book was released on 2004-10-21 with total page 507 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 36th Sminaire de Probabilits contains an advanced course on Logarithmic Sobolev Inequalities by A. Guionnet and B. Zegarlinski, as well as two shorter surveys by L. Pastur and N. O'Connell on the theory of random matrices and their links with stochastic processes. The main themes of the other contributions are Logarithmic Sobolev Inequalities, Stochastic Calculus, Martingale Theory and Filtrations. Besides the traditional readership of the Sminaires, this volume will be useful to researchers in statistical mechanics and mathematical finance.
Book Synopsis Annales Mathématiques Blaise Pascal by :
Download or read book Annales Mathématiques Blaise Pascal written by and published by . This book was released on 1996 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis System Dynamics '91 by : Khalid Saeed
Download or read book System Dynamics '91 written by Khalid Saeed and published by . This book was released on 1991 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Quantum Phase Transitions in Transverse Field Models by : Amit Dutta
Download or read book Quantum Phase Transitions in Transverse Field Models written by Amit Dutta and published by Cambridge University Press. This book was released on 2015-01-28 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book establishes the fundamental connections between the physics of quantum phase transitions and the technological promise of quantum information.
Download or read book Symmetry written by Hermann Weyl and published by Princeton University Press. This book was released on 2015-07-06 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Symmetry is a classic study of symmetry in mathematics, the sciences, nature, and art from one of the twentieth century's greatest mathematicians. Hermann Weyl explores the concept of symmetry beginning with the idea that it represents a harmony of proportions, and gradually departs to examine its more abstract varieties and manifestations—as bilateral, translatory, rotational, ornamental, and crystallographic. Weyl investigates the general abstract mathematical idea underlying all these special forms, using a wealth of illustrations as support. Symmetry is a work of seminal relevance that explores the great variety of applications and importance of symmetry.
