Mobile impurity near the superfluid–Mott-insulator quantum critical point in two dimensions

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Mobile impurity near the superfluid–Mott-insulator quantum critical point in two dimensions

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Title: Mobile impurity near the superfluid–Mott-insulator quantum critical point in two dimensions
Author: Punk, Matthias; Sachdev, Subir

Note: Order does not necessarily reflect citation order of authors.

Citation: Punk, Matthias, and Subir Sachdev. 2013. “Mobile impurity near the superfluid–Mott-insulator quantum critical point in two dimensions.” Physical Review A 87 (3) (March 19). doi:10.1103/PhysRevA.87.033618. http://dx.doi.org/10.1103/PhysRevA.87.033618.
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Abstract: We consider bosonic atoms in an optical lattice at integer filling, tuned to the superfluid-Mott insulator critical point, and coupled to a single, mobile impurity atom of a di↵erent species. This setup is inspired by current experiments with quantum gas microscopes, which enable tracking of the impurity motion. We describe the evolution of the impurity motion from quantum wave packet spread at short times, to Brownian diffusion at long times. This dynamics is controlled by the interplay between dangerously irrelevant perturbations at the strongly-interacting field theory describing the superfluid-insulator transition in two spatial dimensions.
Published Version: doi:10.1103/PhysRevA.87.033618
Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:11688799
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