Time evolution of correlations in strongly interacting fermions after a quantum quench

• DOI: 10.1103/physrevb.79.155104
• Publication Date: 2009-04-08T17:38:28Z
• Authors: Salvatore R. Manmana; Stefan Wessel; Reinhard M. Noack; Alejandro Muramatsu
• Keywords: Time evolution; Lattice (music)

Using the adaptive time-dependent density-matrix renormalization group, we study time evolution of density correlations interacting spinless fermions on a one-dimensional lattice after sudden change in interaction strength. Over broad range model parameters, correlation function exhibits characteristic light-cone-like representative ballistic transport information. Such behavior is observed both when quenching an insulator into metallic region and also within insulating region. However, state beyond quantum critical point quenched deep regime, no indication for observed. Instead, stable domain walls emerge during evolution, consistent with predictions Kibble-Zurek mechanism.