Coherent oscillations in small Fermi-polaron systems

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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2017-12-01

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Department of Applied Physics

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en

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Physical Review A, Volume 96, issue 6, pp. 1-9

Abstract

We study the ground state and excitations of a one-dimensional trapped polarized Fermi gas interacting with a single impurity. First, we study the tunneling dynamics of the impurity through a potential barrier, such as one effectively created by a double-well trap. To this end, we perform an exact diagonalization of the full few-body Hamiltonian and analyze the results in a local-density approximation. Off-diagonal and one-particle correlation matrices are studied and are shown to be useful for discerning between different symmetries of the states. Second, we consider a radio-frequency spectroscopy of our system and the resulting spectral function. These calculations can motivate future experiments, which can provide further insight into the physics of a Fermi polaron.

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DOI

10.1103/PhysRevA.96.063603

Citation

Tylutki, M, Astrakharchik, G E & Recati, A 2017, ' Coherent oscillations in small Fermi-polaron systems ', Physical Review A, vol. 96, no. 6, 063603, pp. 1-9 . https://doi.org/10.1103/PhysRevA.96.063603

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https://urn.fi/URN:NBN:fi:aalto-201808014344

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[article-cris] Perustieteiden korkeakoulu / SCI