Berlin 2018 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 72: Poster Session: Correlated Electrons
TT 72.91: Poster
Mittwoch, 14. März 2018, 15:00–19:00, Poster B
Single-hole dynamics in two-leg t-J ladder systems with matrix product states (MPS) — •Alexander Osterkorn1, Fabian Grusdt2, Sebastian Paeckel1, Thomas Köhler1, and Salvatore Manmana1 — 1Institut für Theoretische Physik, Universität Göttingen, 37077 Göttingen, Germany — 2Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA
We study the time evolution of a single hole in two-leg t-J-ladder systems at zero temperature using time-dependent matrix product states (MPS). We prepare the system with one fermion per lattice site with neither interaction nor tunneling between the legs. At time t = 0 one particle is removed from one of the legs and the tunneling amplitude between the two legs is set to a nonzero value. This allows us to study the separation of spinons and holons as a function of the rung-tunneling and compare to predictions from effective theories. We discuss implications for realizations with ultracold gases on optical lattices.