Dynamical correlation functions of the Hubbard model and dimensional crossover
By: Pedro Sacramento
From: IST
At: Instituto de Investigação Interdisciplinar, Anfiteatro
[2012-01-24]
The exact solution of the Hubbard model in 1d is used to calculate dynamical correlation functions. The results compare well with experimental results for TTF-TCNQ showing evidence for charge-spin separation. We also consider the coupling between Hubbard chains and study the crossover from a Luttinger liquid like behavior in 1d to a Fermi liquid like behavior in higher dimensions.
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