Driven dipole oscillations and the lowest-energy excitations of strongly interacting lattice bosons in a harmonic trap

K. He, J. Brown, S. Haas, M. Rigol

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4 Citations (Scopus)

Abstract

We show that the analysis of the time evolution of the occupation of site and momentum modes of harmonically trapped lattice hard-core bosons, under driven dipole oscillations, allows one to determine the energy of the lowest one-particle excitations of the system in equilibrium. The analytic solution of a single particle in the absence of a lattice is used to identify which function of those time-dependent observables is best fit for the analysis, as well as to relate the dynamic response of the system to its single-particle spectrum. In the presence of the lattice and of multiple particles, a much richer and informative dynamical response is observed under the drive.

Original languageEnglish (US)
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume89
Issue number3
DOIs
StatePublished - Mar 31 2014

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bosons
traps
dipoles
harmonics
oscillations
excitation
energy
dynamic response
occupation
momentum

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

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AB - We show that the analysis of the time evolution of the occupation of site and momentum modes of harmonically trapped lattice hard-core bosons, under driven dipole oscillations, allows one to determine the energy of the lowest one-particle excitations of the system in equilibrium. The analytic solution of a single particle in the absence of a lattice is used to identify which function of those time-dependent observables is best fit for the analysis, as well as to relate the dynamic response of the system to its single-particle spectrum. In the presence of the lattice and of multiple particles, a much richer and informative dynamical response is observed under the drive.

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