TY - JOUR
T1 - Ground-state reference systems for expanding correlated fermions in one dimension
AU - Heidrich-Meisner, F.
AU - Rigol, M.
AU - Muramatsu, A.
AU - Feiguin, A. E.
AU - Dagotto, E.
PY - 2008/7/17
Y1 - 2008/7/17
N2 - 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±π/2, accompanied by the onset of power-law correlations.
AB - 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±π/2, accompanied by the onset of power-law correlations.
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U2 - 10.1103/PhysRevA.78.013620
DO - 10.1103/PhysRevA.78.013620
M3 - Article
AN - SCOPUS:47749096009
SN - 1050-2947
VL - 78
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 1
M1 - 013620
ER -