Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session B27: Disorder and Localization in AMO Systems I
11:30 AM–2:30 PM,
Monday, March 15, 2021
Sponsoring
Units:
DAMOP DCMP
Chair: Ehud Altman, University of California, Berkeley
Abstract: B27.00005 : Dynamics in centrally coupled spin systems
12:42 PM–12:54 PM
Live
Presenter:
Sebastian Wenderoth
(Physics, University of Freiburg)
Authors:
Sebastian Wenderoth
(Physics, University of Freiburg)
Nathan Ng
(University of California, Berkeley)
Michael Kolodrubetz
(University of Texas at Dallas)
Eran Rabani
(University of California, Berkeley)
Michael Thoss
(Physics, University of Freiburg)
In our work, we explore the dynamics of a spin-chain with a local antiferromagnetic interaction, and non-local spin-flip interactions induced by coupling of the spins to a central d-level system(qudit). The non-local interaction induced by the centrally coupled qudit makes the simulation challenging. We employ the multilayer multiconfiguration time-dependent Hartree approach [2,3] to simulate the dynamics of moderately large spin chains in a numerically exact way. Using this approach, we examine dynamical properties of the spin chain and the qudit, with particular focus on the question whether the system retains information about the initial state in local observables.
[1] Phys. Rev. B 82, 174411 (2010)
[2] J. Chem. Phys. 119, 1289 (2003)
[3] J. Chem. Phys. 134, 044135 (2011)
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