Anika C Pflanzer et al 2009 J. Phys. B: At. Mol. Opt. Phys. 42 231002 doi:10.1088/0953-4075/42/23/231002
Anika C Pflanzer1, Sascha Zöllner2 and Peter Schmelcher1,3
Show affiliationsWe study the quantum dynamics of strongly interacting few-boson mixtures in one-dimensional traps. If one species is strongly localized compared to the other (e.g., much heavier), it can serve as an effective potential barrier for that mobile component. Near the limit of infinite localization, we map this to a system of identical bosons in a double well. For realistic localization, the backaction of the light species on the 'barrier' atoms is explained—to lowest order—in terms of an induced attraction between these. Even in equilibrium, this may outweigh the bare intra-species interaction, leading to unexpected correlated states. Remarkably, the backaction drastically affects the inter-species dynamics, such as the tunnelling of an attractively bound pair of fermionized atoms.
Quantum gases, liquids and solids
Issue 23 (14 December 2009)
Received 22 September 2009, in final form 23 September 2009
Published 19 November 2009
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I Vurgaftman et al 2009 New J. Phys. 11 125015
Sharly Fleischer et al 2009 New J. Phys. 11 105039
H Fukuzawa et al 2009 J. Phys. B: At. Mol. Opt. Phys. 42 181001
P W Martin 2002 Metrologia 39 1
P W Martin 2002 Metrologia 39 125
Craig A Tracy and Harold Widom 2009 J. Phys. A: Math. Theor. 42 425002
M Zawada et al 2008 J. Phys. B: At. Mol. Opt. Phys. 41 241001
F H M Faisal 2009 J. Phys. B: At. Mol. Opt. Phys. 42 171003
Surajit Dhara et al 2009 J. Phys.: Condens. Matter 21 505103