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TT: Fachverband Tiefe Temperaturen

TT 5: Correlated Electrons - (General) Theory

TT 5.8: Talk

Monday, March 26, 2007, 16:30–16:45, H18

Charge transfer through DNA and peptides: The role of electron correlations — •Sabine Tornow¹, F. Anders², and R. Bulla¹ — ¹Theoretical Physics III,Center for Electronic Correlations and Magnetism,University of Augsburg — ²Institute of theoretical physics,University of Bremen

In nature charges are transferred trough proteins or DNA over large distances. To describe the real time dynamics of the charges we consider a dissipative extended Hubbard model. The environment is modelled similar as in a spin boson model. In the nuclear tunnelling regime we calculate the time dependent populations with the time-dependent Numerical Renormalization Group. We found a considerable difference between single and multiple charge dynamics.