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Quantum Chemistry

Bose-Einstein Condensation and Many-Body Localization of Rotational Excitations of Polar Molecules

arXiv
Authors: M. P. Kwasigroch, N. R. Cooper

Year

2013

Paper ID

31813

Status

Preprint

Abstract Read

~2 min

Abstract Words

100

Citations

N/A

Abstract

We study theoretically the collective dynamics of rotational excitations of polar molecules loaded into an optical lattice in two dimensions. These excitations behave as hard-core bosons with a relativistic energy dispersion arising from the dipolar coupling between molecules. This has interesting consequences for the collective many-body phases. The rotational excitations can form a Bose-Einstein condensate at non-zero temperature, manifesting itself as a divergent T2 coherence time of the rotational transition even in the presence of inhomogeneous broadening. The dynamical evolution of a dense gas of rotational excitations shows regimes of non-ergodicity, characteristic of many-body localization and localization protected quantum order.

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  • We study theoretically the collective dynamics of rotational excitations of polar molecules loaded into an optical lattice in two dimensions.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1311.5393 [2] arXiv https://arxiv.org/abs/1311.5393 [3] Publisher https://arxiv.org/abs/1311.5393

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