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Bouillot

Statics and Dynamics of Weakly Coupled Antiferromagnetic Spin-1/2 Ladders in a Magnetic Field

2013 2015. Buch. x, 98 S.: Bibliographien. Softcover
Springer ISBN 978-3-642-44613-9
Format (B x L): 15,5 x 23,5 cm
Gewicht: 180 g
In englischer Sprache
Das Werk ist Teil der Reihe:
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.

Audience

Research

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Nominated as an outstanding contribution by the University of Geneva Presents the first quantitative test of the Luttinger liquid universality class Demonstrates that these systems hold great promise as quantum simulators Provides a full determination of the dynamical correlation functions