Publication Type
Journal
Journal Name
Physical Review A
Publication Date
Page Number
013620
Volume
78
Issue
1
Abstract
We study the sudden expansion of strongly correlated fermions in a one-dimensional lattice, utilizing the
time-dependent density-matrix renormalization group method. Our focus is on the behavior of experimental
observables such as the density, the momentum distribution function, and the density and spin structure factors.
As our main result, we show that correlations in the transient regime can be accurately described by equilibrium
reference systems. In addition, we find that the expansion from a Mott insulator produces distinctive
peaks in the momentum distribution function at k/2, accompanied by the onset of power-law
correlations.
