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Statics and Dynamics of Weakly Coupled Antiferromagnetic Spin-1/2 Ladders in a Magnetic Field
This thesis shows how a combination of analytic and numerical techniques, such as a time dependent and finite temperature Density Matrix Renormalization Group (DMRG) technique, can be used to obtain the physical properties of low dimensional quantum magnets with an unprecedented level of accuracy. A comparison between the theory and experiment then enables these systems to be used as quantum simulators; for example, to test various generic properties of low dimensional systems such as Luttinger liquid physics, the paradigm of one dimensional interacting quantum systems. Application of these techniques to a material made of weakly coupled ladders (BPCB) allowed the first quantitative test of Luttinger liquids. In addition, other physical quantities (magnetization, specific heat etc.), and more remarkably the spins-spin correlations – directly measurable in neutron scattering experiments – were in excellent agreement with the observed quantities. We thus now have tools to quantitatiively assess the dynamics for this class of quantum systems.
The European Union Encyclopedia and Directory 1999
Charts the Union's development from its conception through to the implementation of the Maastricht Treaty and its continuing activities. Includes an A-Z section of concise definitions and explanations of organizations, acronyms and terms. The most extensive collection of information available on the European Union. The third edition of this definitive reference work has been thoroughly revised and updated to provide the latest information on the EU. It charts the Union's development from its conception through to the creation of the single market in 1992, to the implementation of the Maastricht Treaty and its continuing activities. Contents include: An A-Z section of concise definitions and ...
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MONTBARD Recueil Historique Tome 1
Version N&B de l'ouvrage. De violents tremblements de terre agitrent la cha"ne des Alpes pendant les journZes des 18 et 19 octobre 1356. Ces secousses furent terribles et Zbranl rent les montagnes. Leurs rZpercussions se firent sentir ^ plus de cent lieues et produisirent, ^ Montbard, dÕaffreux ravages... Le 21 dZcembre 1754, alerte est donnZe ^ Montbard. La bande ^ Mandrin [le cZl bre contrebandier] est entrZe ^ Seurre le 17 dZcembre et a pris la route de Beaune. La municipalitZ avise aussit(TM)t les habitants, qui re oivent la consigne de se munir dÕun fusil et de se tenir pr ts ^ se rassembler sur la place de la rue des Barres au premier signal dÕalarmeÉ Vous ne connaissiez pas ces Zpisodes bourguignons ? Cet ouvrage retrace lÕhistoire de Montbard et ses environs. Vous y dZcouvrirez la vie locale, le dZveloppement de la ville, la fa on dont vivaient les habitants, les questions politiques et Zconomiques ^ diffZrentes Zpoques, ou encore des hommes cZl bres: Saint-Bernard, Buffon ou Daubenton.
