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Coherent oscillations in small Fermi-polaron systems

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Tylutki, Marek
Astrakharchik, GrigoriMés informacióMés informacióMés informació
Recati, Alessio
Document typeArticle
Defense date2017-12-01
PublisherAMER PHYSICAL SOC
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
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.
CitationTylutki, M., Astrakharchik, G., Recati, A. Coherent oscillations in small Fermi-polaron systems. "Physical Review A", 1 Desembre 2017, vol. 96, núm. 6, p. 1-9. 
URIhttp://hdl.handle.net/2117/116100
DOI10.1103/PhysRevA.96.063603
ISSN2469-9926
Publisher versionhttps://journals.aps.org/pra/abstract/10.1103/PhysRevA.96.063603
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  • Departament de Física - Articles de revista [1.906]
  • SIMCON - First-principles approaches to condensed matter physics: quantum effects and complexity - Articles de revista [383]
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