Dynamics of doublon-holon pairs in Hubbard two-leg ladders
Dynamics of doublon-holon pairs in Hubbard two-leg ladders
The dynamics of holon-doublon pairs is studied in Hubbard two-leg ladders using the time-dependent density matrix renormalization group method. We find that the geometry of the two-leg ladder, which is qualitatively different from a one-dimensional chain due to the presence of a spin gap, strongly affects the propagation of a …