Sponsors:
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Organized by
the Institute of Experimental Physics, University of Bialystok
K.-U. Neumann, K. Neumann, K.R.A. Ziebeck
Dept. of Physics, Loughborough University, Loughborough, UK
Electronic Correlations, Magnetism and the Hubbard Model
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There are only relatively few basic models in solid state physics, each aimed at capturing some essential physics of electronic systems. One such model is the Hubbard model.
The Hubbard model will be introduced and some basic physics will be explored with the help of this model. Finite cluster calculations dealing with a 1 dimensional Hubbard model (a Hubbard chain) will be introduced. Some physical properties will be investigated by exact digitalization of the Hamiltonian, including charge and spin fluctuations, magnetic correlations and correlation functions. A connection to experimental investigations is made by asking what features are accessible in, for example, neutron scattering experiments.
An introduction will be given into the modelling and computational aspects of such an endeavour. The process of how to model a finite Hubbard chain on a computer will be considered in detail and illustrated with examples.
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