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DPG

Berlin 2008 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 32: Correlated Electrons: Poster Session

TT 32.2: Poster

Thursday, February 28, 2008, 14:00–18:00, Poster B

Deconvolution procedures for dynamical DMRG spectra — •Martin Paech and Eric Jeckelmann — Leibniz Universitaet Hannover, Germany

The dynamical density-matrix renormalization group (DDMRG) method provides the frequency-dependent correlation functions of finite-size low-dimensional systems with great accuracy. The spectrum in the thermodynamic limit can often be obtained by a deconvolution of the finite-system DDMRG data under some regularity assumptions for the spectrum. We discuss deconvolution procedures for general spectra and illustrate them with a study of the density of states in one-dimensional correlated electron systems.

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