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Author: Frédéric Chandelier Publisher: ISBN: Category : Languages : en Pages : 190
Book Description
In this thesis, we apply various methods inherited from Fields theories, symmetry groups and Quantum Mechanics to the study of problems in Condensed Matter Physics. We focus in particular on the Quantum Hall Effect. We construct a global phase diagram at zero temperature, using symmetry principles, and predict the occurence of plateau-insulator transitions which seems to be observed experimentally. Besides, we set-up a mathematical framework which permits one to take properly into account the most general boundary conditions compatible with gauge invariance in the study of a Landau type problem on a rectangular sample which somehow mimies a realistic Quantum Hall Effect experiment. The Hall conductivity is calculated throught a Kubo formula and is found to take integer well as fractionnal values. Finally, we study a class of effective models currently used in the study of planar systems which take into account realistic tri-dimensional effects. In those Maxwell-Chern-Simons type models, we exhibit a new duality symmetry.
Author: Frédéric Chandelier Publisher: ISBN: Category : Languages : en Pages : 190
Book Description
In this thesis, we apply various methods inherited from Fields theories, symmetry groups and Quantum Mechanics to the study of problems in Condensed Matter Physics. We focus in particular on the Quantum Hall Effect. We construct a global phase diagram at zero temperature, using symmetry principles, and predict the occurence of plateau-insulator transitions which seems to be observed experimentally. Besides, we set-up a mathematical framework which permits one to take properly into account the most general boundary conditions compatible with gauge invariance in the study of a Landau type problem on a rectangular sample which somehow mimies a realistic Quantum Hall Effect experiment. The Hall conductivity is calculated throught a Kubo formula and is found to take integer well as fractionnal values. Finally, we study a class of effective models currently used in the study of planar systems which take into account realistic tri-dimensional effects. In those Maxwell-Chern-Simons type models, we exhibit a new duality symmetry.
Book Description
DEUX FORMALISMES PRINCIPAUX SONT UTILISES POUR CALCULER DANS DIVERSES SITUATIONS LES FONCTIONS DE CORRELATION DE LA THEORIE QUANTIQUE DES CHAMPS : LE FORMALISME OPERATORIEL ET LE FORMALISME DE L'INTEGRALE DE CHEMIN. DANS LA PREMIERE PARTIE, LES DEUX FORMALISMES SONT UTILISES PARALLELEMENT DANS LE CADRE DE LA THEORIE DES CHAMPS A L'EQUILIBRE THERMIQUE, APPLIQUEE A LA PHYSIQUE DES PARTICULES, AFIN DE METTRE EN EVIDENCE L'ORIGINE DU CONTOUR D'INTEGRATION, DANS LE PLAN COMPLEXE EN TEMPS, QUI INTERVIENT DANS LE CALCUL DES FONCTIONS DE CORRELATION. LES DEUX ARTICLES PRESENTES PROPOSENT ENSUITE UNE DEMONSTRATION COMPLETE DU FORMALISME EN TEMPS REEL UTILISE COURAMMENT, FORMALISME QUI N'AVAIT JAMAIS ETE JUSTIFIE DE FACON RIGOUREUSE DANS LA LITTERATURE. DANS LA DEUXIEME PARTIE, ET TOUJOURS DANS LE CADRE DE LA PHYSIQUE DES PARTICULES, LE FORMALISME OPERATORIEL SEUL EST UTILISE POUR ABORDER LA NOTION DE HORS-EQUILIBRE, QUI JOUE UN ROLE IMPORTANT DANS LA PHYSIQUE DU PLASMA QUARK-GLUON. ON EVALUE EN PARTICULIER LA CONTRIBUTION DES SINGULARITES DE PINCEMENT. QUANT A LA TROISIEME PARTIE, ELLE S'INSCRIT DANS LE CADRE DE LA PHYSIQUE DE LA MATIERE CONDENSEE, ET L'INTEGRALE DE CHEMIN EST DE NOUVEAU UTILISEE POUR ETUDIER LE MODELE BOSONIQUE DE HUBBARD, QUI A DE NOMBREUSES APPLICATIONS EN SUPERFLUIDITE ET EN SUPRACONDUCTIVITE. LA THESE DECRIT UNE NOUVELLE DISCRETISATION DE L'INTEGRALE DE CHEMIN DANS L'OPTIQUE DE SIMULATIONS NUMERIQUES.
Author: Daniel Iagolnitzer Publisher: Birkhäuser ISBN: 3034879075 Category : Science Languages : en Pages : 981
Book Description
The International Conference on Theoretical Physics, TH-2002, took place in Paris from July 22 to 27 in the Conference Center of the UNESCO, the United Nations Educational Scientific and Cultural Organization, under aegis of the IUPAP, the International Union of Pure and Applied Physics and of the French and Euro pean Physical Societies, with a large support of several French, European and international Institutions. International and crossdisciplinary, TH-2002 welcomed around 1200 partic ipants representing all domains of modern theoretical physics. The conference offered a high-level scientific program, including 18 plenary lectures, 45 general lectures in thematic sessions and 140 more specialized lectures, partly invited and partly selected among proposals received from participants. Around 500 contribu tions were also presented as posters. Plenary lectures as well as general thematic lectures were addressed to a general audience of theoricians, not only to specialists. According to our commitments towards UNESCO and other sponsoring insti tutions, TH-2002 attributed more than 200 fellowships, mostly to scientists from developing countries and Eastern Europe, covering registration fees and, for more than half of them, stay expenses with student type accomodation. Special highlights of the conference included • the opening ceremony on July 22, with the participation of Mrs Claudie Haignere, French Minister of Research, and M. Walter Erdelen, General Ad joint Director for Sciences at UNESCO. Their opening addresses were espe cially appreciated and are reproduced below. This ceremony preceded the first lecture by Professor Cohen-Tannoudji, Physics Nobel prize winner.
Author: Jean Bernard Zuber Publisher: ISBN: Category : Science Languages : en Pages : 920
Book Description
Over the last ten years, quantum field theory and statistical mechanics have undergone quick and parellel developments characterized by the emergence of new ideas and the use of common concepts and methods. In particular, the renormalization group ideas have been successfully applied to the study of critical behaviour in quantum field theories. Simultaneously, the flourishing of gauge theories has produced a complete renewal in the theory of elementary particles. In view of this burst of ideas and new results, this Les Houches summer school was organised and open to physicists working in the domains of field theory, particle physics, condensed matter and neighbouring fields. The resulting proceedings provide an up-to-date review of the important developments in these fields.
Author: Edition XII Publisher: ISBN: Category : Computer science Languages : en Pages : 552
Book Description
"Over 500 profiles of Postgraduate Science, Health, Computer Sciences and Engineering courses. A comprehensive reference section, with details of over 10 000 Postgraduate Science and Engineering courses. There is also practical editorial giving useful and essential advice and information"--Back cover.
Author: Frédéric Chandelier
Author: Frédéric Chandelier
Author: HUBERT.. MABILAT
Author: Édouard Brezin
Author: Daniel Iagolnitzer
Author: Jean Bernard Zuber
Author: 
Author: Edition XII
Author: 
Author: Editions Technip
Author: