Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session D02: Nonequilibrium Dynamics in Ultracold Matter
2:30 PM–5:30 PM,
Monday, March 2, 2020
Room: 105
Sponsoring
Unit:
DAMOP
Chair: Christian Gross, Max-Planck-Institute for Quantum Optics
Abstract: D02.00003 : Quench dynamics of two-component dipolar Fermions in a Quasiperiodic potential*
Presenter:
bradraj pandey
(University of Tennessee, Knoxville)
Authors:
bradraj pandey
(University of Tennessee, Knoxville)
Elbio Dagotto
(University of Tennessee, Knoxville)
swapan K. pati
(TSU, jncasr)
dynamics of two-component dipolar fermions, in the presence and absence of a
quasiperiodic potential. We investigate the localization of the charge and spin degree of
freedom separately, by probing local and global dynamical observables [1]. To study non-
equilibrium dynamics, we start with two different product states, doublons and a Neel
state. We calculate the long time dynamics of the fermionic Hamiltonian using exact-
diagonalization and matrix-product-state formalisms. In the case of doublons, we
demonstrate the transition from delocalized to localized MBL phase.
In the case of Neel state, by introducing strong enough disorder,
we show that the localization of the spin degree of freedom is also possible along with the
charge degree of freedom when on-site and long-range interaction couplings are equal in
strength. Our predictions for localizations of both charge and spin degrees of freedom should be
observed in experiments with fermionic dipolar atoms subject to a quasiperiodic potential.
[1] B. Pandey, E. Dagotto, and S. K. Pati, in preparation.
*The U.S. Department of Energy, Office of Science,
Basic Energy Sciences, Materials Sciences and Engineering Division.
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