Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

TT: Fachverband Tiefe Temperaturen

TT 1: Correlated Electrons: Low-dimensional Systems - Models 1

TT 1.5: Vortrag

Montag, 26. März 2012, 10:30–10:45, H 0104

Relaxation and thermalization in the 1d Hubbard model — •Tilman Enss¹ and Jesko Sirker² — ¹TU München, Germany — ²TU Kaiserslautern, Germany

The time evolution of a 1d quantum system after a quench is a challenging many-body problem which can be studied, e.g., numerically using time-dependent density matrix renormalization group (DMRG) techniques. As shown by Lieb and Robinson, information spreads at a finite velocity resulting in an effective ``light cone''. In my talk I will present a very efficient DMRG algorithm based on this light cone structure. With the help of the DMRG data I will discuss the relaxation and thermalization of doublon states in the fermionic Hubbard model.