Transport properties of correlated electrons in high dimensions
Abstract
We develop a new general algorithm for finding a regular tight-binding lattice Hamiltonian in infinite dimensions for an arbitrary given shape of the density of states (DOS). The availability of such an algorithm is essential for the investigation of broken-symmetry phases of interacting electron systems and for the computation of transport properties within the dynamical mean-field theory (DMFT). The algorithm enables us to calculate the optical conductivity fully consistently on a regular lattice, e.g., for the semi-elliptical (Bethe) DOS. We discuss the relevant f-sum rule and present numerical results obtained using quantum Monte Carlo techniques.
Keywords
Cite
@article{arxiv.cond-mat/0303204,
title = {Transport properties of correlated electrons in high dimensions},
author = {N. Blümer and P. G. J. van Dongen},
journal= {arXiv preprint arXiv:cond-mat/0303204},
year = {2007}
}
Comments
8 pages, 4 figures. Proceedings of the NATO workshop on "Concepts in Electron Correlation", Hvar, Croatia (2002). For more details, see thesis at http://komet337.physik.uni-mainz.de/Bluemer/publications.en.shtml#thesis