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.
Quantum dynamics of impurities in a one-dimensional Bose gas / Catani, J.; Lamporesi, Giacomo; Naik, D.; Gring, M.; Inguscio, M.; Minardi, F.; Kantian, A.; Giamarchi, T.. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - 85:2(2012), pp. 0236231-0236236. [10.1103/PhysRevA.85.023623]
Quantum dynamics of impurities in a one-dimensional Bose gas
Lamporesi, Giacomo;
2012-01-01
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.File | Dimensione | Formato | |
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2012_PRA_1Ddiffusion.pdf
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