Dynamics of an impurity in a one-dimensional lattice

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Dynamics of an impurity in a one-dimensional lattice. / Massel, F.; Kantian, A.; Daley, A.D.; Giamarchi, T.; Törmä, P.

In: New Journal of Physics, Vol. 15, 045018, 04.2013, p. 1-25.

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Massel, F. ; Kantian, A. ; Daley, A.D. ; Giamarchi, T. ; Törmä, P. / Dynamics of an impurity in a one-dimensional lattice. In: New Journal of Physics. 2013 ; Vol. 15. pp. 1-25.

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@article{f9040f972b064616946e09d820b63058,
title = "Dynamics of an impurity in a one-dimensional lattice",
abstract = "We study the non-equilibrium dynamics of an impurity in a harmonic trap that is kicked with a well-defined quasi-momentum, and interacts with a bath of free fermions or interacting bosons in a one-dimensional lattice configuration. Using numerical and analytical techniques we investigate the full dynamics beyond linear response, which allows us to quantitatively characterize states of the impurity in the bath for different parameter regimes. These vary from a tightly bound molecular state in a strongly interacting limit to a polaron (dressed impurity) and a free particle for weak interactions, with composite behaviour in the intermediate regime. These dynamics and different parameter regimes should be readily realizable in systems of cold atoms in optical lattices.",
keywords = "ultracold quantum gases, impurities, quantum many-body physics, one-dimensional physics, ultracold quantum gases, impurities, quantum many-body physics, one-dimensional physics, ultracold quantum gases, impurities, quantum many-body physics, one-dimensional physics",
author = "F. Massel and A. Kantian and A.D. Daley and T. Giamarchi and P. T{\"o}rm{\"a}",
year = "2013",
month = "4",
doi = "10.1088/1367-2630/15/4/045018",
language = "English",
volume = "15",
pages = "1--25",
journal = "New Journal of Physics",
issn = "1367-2630",

}

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TY - JOUR

T1 - Dynamics of an impurity in a one-dimensional lattice

AU - Massel, F.

AU - Kantian, A.

AU - Daley, A.D.

AU - Giamarchi, T.

AU - Törmä, P.

PY - 2013/4

Y1 - 2013/4

N2 - We study the non-equilibrium dynamics of an impurity in a harmonic trap that is kicked with a well-defined quasi-momentum, and interacts with a bath of free fermions or interacting bosons in a one-dimensional lattice configuration. Using numerical and analytical techniques we investigate the full dynamics beyond linear response, which allows us to quantitatively characterize states of the impurity in the bath for different parameter regimes. These vary from a tightly bound molecular state in a strongly interacting limit to a polaron (dressed impurity) and a free particle for weak interactions, with composite behaviour in the intermediate regime. These dynamics and different parameter regimes should be readily realizable in systems of cold atoms in optical lattices.

AB - We study the non-equilibrium dynamics of an impurity in a harmonic trap that is kicked with a well-defined quasi-momentum, and interacts with a bath of free fermions or interacting bosons in a one-dimensional lattice configuration. Using numerical and analytical techniques we investigate the full dynamics beyond linear response, which allows us to quantitatively characterize states of the impurity in the bath for different parameter regimes. These vary from a tightly bound molecular state in a strongly interacting limit to a polaron (dressed impurity) and a free particle for weak interactions, with composite behaviour in the intermediate regime. These dynamics and different parameter regimes should be readily realizable in systems of cold atoms in optical lattices.

KW - ultracold quantum gases, impurities, quantum many-body physics, one-dimensional physics

KW - ultracold quantum gases, impurities, quantum many-body physics, one-dimensional physics

KW - ultracold quantum gases, impurities, quantum many-body physics, one-dimensional physics

UR - http://iopscience.iop.org/1367-2630/15/4/045018/

U2 - 10.1088/1367-2630/15/4/045018

DO - 10.1088/1367-2630/15/4/045018

M3 - Article

VL - 15

SP - 1

EP - 25

JO - New Journal of Physics

JF - New Journal of Physics

SN - 1367-2630

M1 - 045018

ER -

ID: 864512