Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session CCC04: V: Non-Ergodic Quantum Dynamics
3:00 PM–5:00 PM,
Wednesday, March 22, 2023
Room: Virtual Room 4
Sponsoring
Unit:
DCMP
Chair: Adrian Culver, University of California, Los Angeles
Abstract: CCC04.00004 : Universality of Dynamical Localization in Periodically Driven Spin Systems: From Simple Quantum Magnets to Disordered and Long-Range Models*
3:36 PM–3:48 PM
Presenter:
Analabha Roy
(The University of Burdwan)
Author:
Analabha Roy
(The University of Burdwan)
We demonstrate the onset of freezing in periodically driven Ising spins with nearest neighbour interactions[1]. We then explore the universality of this phenomenon by investigating the fate of freezing in quantum many body systems with lower symmetries. These include the Ising model with disorder[2], as well as long range interactions. In the former case, we demonstrate that, although random interactions kill freezing eventually, spectacular remnants survive even with strong disorder. Finally, we summarize ongoing explorations of the fate of freezing in long-range spin systems. We present analysis and numerics for the periodically driven Lipkin-Meshkov-Glick (LMG) model [3,4]. In this system, the same dynamical localization appears in the thermodynamic limit, as well for finite sized systems. In addition, we discuss ongoing numerical studies of localization when the spins have power-law interactions. We expect that approximate simulations of the quantum phase space dynamics, together with the addition of quantum correlations due to the BBGKY evolution, will bring about highly accurate estimates of the correlations, demonstrating the persistence of freezing in these systems.
*SERB, Government of India, Project CRG/2018/004002UGC-BSR Startup Grant F.30-425/2018(BSR)
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700