Probing relaxation dynamics of a few strongly correlated bosons in a 1D triple well optical lattice
The relaxation process of a few strongly interacting bosons in a triple well optical lattice is studied from the first principle using the multiconfigurational time-dependent Hartree method for bosons. We report the contrasting response of the system under two independent quench processes: an intera...
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Published in | Journal of physics. B, Atomic, molecular, and optical physics Vol. 52; no. 21; pp. 215303 - 215312 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
IOP Publishing
14.11.2019
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Subjects | |
Online Access | Get full text |
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Summary: | The relaxation process of a few strongly interacting bosons in a triple well optical lattice is studied from the first principle using the multiconfigurational time-dependent Hartree method for bosons. We report the contrasting response of the system under two independent quench processes: an interaction quench and a lattice depth quench. We analyze the evolution of the reduced one-body density matrix, two-body density and the Shannon information entropy for a wide range of lattice depth and interaction strength parameters. For the strong interaction quench, we observe a very fast relaxation to the steady state. In contrast, for the lattice depth quench, we observe collapse-revival dynamics in all the key measures. We also provide the best fitting formulas for relaxation and revival time which follow power law decay. |
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Bibliography: | JPHYSB-105219.R2 |
ISSN: | 0953-4075 1361-6455 |
DOI: | 10.1088/1361-6455/ab2999 |