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Title: Quasiadiabatic dynamics of ultracold bosonic atoms in a one-dimensional optical superlattice
Authors: Dhar, A
Rossini, D
Das, B. P
Issue Date: Sep-2015
Publisher: The American Physical Society
Citation: Physical Review A, Vol. 92, No. 3, 033610
Abstract: We study the quasiadiabatic dynamics of a one-dimensional system of ultracold bosonic atoms loaded in an optical superlattice. Focusing on a slow linear variation in time of the superlattice potential, the system is driven from a conventional Mott insulator phase to a superlattice-induced Mott insulator, crossing in between a gapless critical superfluid region. Due to the presence of a gapless region, a number of defects depending on the velocity of the quench appear. Our findings suggest a power-law dependence similar to the Kibble-Zurek mechanism for intermediate values of the quench rate. For the temporal ranges of the quench dynamics that we considered, the scaling of defects depends nontrivially on the width of the superfluid region.
Description: Open Access
ISSN: 1050-2947
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Appears in Collections:IIAP Publications

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