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arXiv · 1106.0828

Quantum dynamics of impurities in a 1D Bose gas

J. Catani·G. Lamporesi·D. Naik·M. Gring·M. Inguscio·F. Minardi·A. Kantian·T. Giamarchi
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Abstract

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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J. Catani, G. Lamporesi, D. Naik, M. Gring, M. Inguscio, F. Minardi, A. Kantian, T. Giamarchi. 2012-02-21. Quantum dynamics of impurities in a 1D Bose gas. https://doi.org/10.1103/physreva.85.023623

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