Fermi-polaron-like effects in a one-dimensional (1D) optical lattice

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Fermi-polaron-like effects in a one-dimensional (1D) optical lattice. / Leskinen, M.J.; Nummi, O.H.T.; Massel, F.; Törmä, P.

In: New Journal of Physics, Vol. 12, 073044, 30.07.2010, p. 1-11.

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Leskinen, M.J. ; Nummi, O.H.T. ; Massel, F. ; Törmä, P. / Fermi-polaron-like effects in a one-dimensional (1D) optical lattice. In: New Journal of Physics. 2010 ; Vol. 12. pp. 1-11.

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@article{9c7c762b1ce64f49934b929073fec53b,
title = "Fermi-polaron-like effects in a one-dimensional (1D) optical lattice",
abstract = "We study a highly imbalanced Fermi gas in a one-dimensional (1D) optical lattice from the polaronic point of view. The time-evolving block decimation algorithm is used to calculate the ground state and dynamics of the system. We find polaronic behaviour qualitatively similar to that in the recent experiment by Schirotzek et al (2009 Phys. Rev. Lett. 102 230402), where radio-frequency (rf) spectroscopy was used to observe polarons in 3D space. In the weakly interacting limit, our exact results are in excellent agreement with a polaron ansatz, and in the strongly interacting limit, the results match with an approximative solution of the Bethe ansatz (BA), suggesting crossover from a quasiparticle to a charge-density excitation regime.",
keywords = "1D lattice, Polaron, Ultracold Fermi gas, 1D lattice, Polaron, Ultracold Fermi gas, 1D lattice, Polaron, Ultracold Fermi gas",
author = "M.J. Leskinen and O.H.T. Nummi and F. Massel and P. T{\"o}rm{\"a}",
year = "2010",
month = "7",
day = "30",
doi = "10.1088/1367-2630/12/7/073044",
language = "English",
volume = "12",
pages = "1--11",
journal = "New Journal of Physics",
issn = "1367-2630",

}

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TY - JOUR

T1 - Fermi-polaron-like effects in a one-dimensional (1D) optical lattice

AU - Leskinen, M.J.

AU - Nummi, O.H.T.

AU - Massel, F.

AU - Törmä, P.

PY - 2010/7/30

Y1 - 2010/7/30

N2 - We study a highly imbalanced Fermi gas in a one-dimensional (1D) optical lattice from the polaronic point of view. The time-evolving block decimation algorithm is used to calculate the ground state and dynamics of the system. We find polaronic behaviour qualitatively similar to that in the recent experiment by Schirotzek et al (2009 Phys. Rev. Lett. 102 230402), where radio-frequency (rf) spectroscopy was used to observe polarons in 3D space. In the weakly interacting limit, our exact results are in excellent agreement with a polaron ansatz, and in the strongly interacting limit, the results match with an approximative solution of the Bethe ansatz (BA), suggesting crossover from a quasiparticle to a charge-density excitation regime.

AB - We study a highly imbalanced Fermi gas in a one-dimensional (1D) optical lattice from the polaronic point of view. The time-evolving block decimation algorithm is used to calculate the ground state and dynamics of the system. We find polaronic behaviour qualitatively similar to that in the recent experiment by Schirotzek et al (2009 Phys. Rev. Lett. 102 230402), where radio-frequency (rf) spectroscopy was used to observe polarons in 3D space. In the weakly interacting limit, our exact results are in excellent agreement with a polaron ansatz, and in the strongly interacting limit, the results match with an approximative solution of the Bethe ansatz (BA), suggesting crossover from a quasiparticle to a charge-density excitation regime.

KW - 1D lattice

KW - Polaron

KW - Ultracold Fermi gas

KW - 1D lattice

KW - Polaron

KW - Ultracold Fermi gas

KW - 1D lattice

KW - Polaron

KW - Ultracold Fermi gas

UR - http://iopscience.iop.org/1367-2630/12/7/073044/

U2 - 10.1088/1367-2630/12/7/073044

DO - 10.1088/1367-2630/12/7/073044

M3 - Article

VL - 12

SP - 1

EP - 11

JO - New Journal of Physics

JF - New Journal of Physics

SN - 1367-2630

M1 - 073044

ER -

ID: 966839