Journal
PHYSICAL REVIEW A
Volume 85, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.85.023623
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Funding
- MIUR
- Ente CdR Firenze
- EU under STREP NAME-QUAM
- CHIMONO
- ERC DISQUA
- Swiss FNS under MaNEP and Division II
- Austrian Science Fund (FWF), CoQuS [W1210]
- Austrian Science Fund (FWF) [W1210] Funding Source: Austrian Science Fund (FWF)
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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.
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