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Quantum Simulation

Higher-order quantum bright solitons in Bose-Einstein condensates show truly quantum emergent behavior

arXiv
Authors: Christoph Weiss, Lincoln D. Carr

Year

2016

Paper ID

41784

Status

Preprint

Abstract Read

~2 min

Abstract Words

89

Citations

N/A

Abstract

When an interaction quench by a factor of four is applied to an attractive Bose-Einstein condensate, a higher-order quantum bright soliton exhibiting robust oscillations is predicted in the semiclassical limit by the Gross-Pitaevskii equation. Combining matrix-product state simulations of the Bose-Hubbard Hamiltonian with analytical treatment via the Lieb-Liniger model and the eigenstate thermalization hypothesis, we show these oscillations are absent. Instead, one obtains a large stationary soliton core with a small thermal cloud, a smoking-gun signal for non-semiclassical behavior on macroscopic scales and therefore a fully quantum emergent phenomenon.

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  • When an interaction quench by a factor of four is applied to an attractive Bose-Einstein condensate, a higher-order quantum bright soliton exhibiting robust oscillations is...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1612.05545 [2] arXiv https://arxiv.org/abs/1612.05545 [3] Publisher https://arxiv.org/abs/1612.05545

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