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Quantum dynamics of impurities in a one-dimensional Bose gas
LENS–European Laboratory for Non-Linear Spectroscopy and Dipartimento di Fisica, Universit` a di Firenze, via N. Carrara 1, IT-50019 Sesto Fiorentino–Firenze, Italy;CNR-INO, via G. Sansone 1, IT-50019 Sesto Fiorentino–Firenze, Italy.
LENS–European Laboratory for Non-Linear Spectroscopy and Dipartimento di Fisica, Universit` a di Firenze, via N. Carrara 1, IT-50019 Sesto Fiorentino–Firenze, Italy;CNR-INO, via G. Sansone 1, IT-50019 Sesto Fiorentino–Firenze, Italy.
LENS–European Laboratory for Non-Linear Spectroscopy and Dipartimento di Fisica, Universit` a di Firenze, via N. Carrara 1, IT-50019 Sesto Fiorentino–Firenze, Italy.
Vienna Center for Quantum Science and Technology, Atominstitut, TU-Wien, AT-1020 Vienna, Austria.
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2012 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 85, no 2Article in journal (Refereed) Published
Abstract [en]

Using a species-selective dipole potential, we create initially localized impurities and investigate their interactions with a majority species of bosonic atoms in a one-dimensional configuration during expansion. We find an interaction-dependent amplitude reduction of the oscillation of the impurities’ size with no measurable frequency shift, and study it as a function of the interaction strength. We discuss possible theoretical interpretations of the data. We compare, in particular, with a polaronic mass shift model derived following Feynman variational approach.

Place, publisher, year, edition, pages
2012. Vol. 85, no 2
National Category
Atom and Molecular Physics and Optics
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URN: urn:nbn:se:uu:diva-336272DOI: 10.1103/PhysRevA.85.023623OAI: oai:DiVA.org:uu-336272DiVA, id: diva2:1165574
Available from: 2017-12-13 Created: 2017-12-13 Last updated: 2017-12-13

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