Bulletin of the American Physical Society
55th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Monday–Friday, June 3–7, 2024; Fort Worth, Texas
Session C04: Localization and Transport in Atomic Systems
2:00 PM–4:00 PM,
Tuesday, June 4, 2024
Room: 201BC
Chair: S. Ghosh, Ahmedabad University, Navrangpura, Ahmedabad, GJ, India
Abstract: C04.00009 : Anomalous Directed Percolation Universality of Rydberg Facilitation in a Gas*
3:36 PM–3:48 PM
Presenter:
Daniel Brady
(University of Kaiserslautern)
Authors:
Daniel Brady
(University of Kaiserslautern)
Simon Ohler
(Technical University of Kaiserslautern-Landau)
Michael Fleischhauer
(University of Kaiserslautern-Landau)
Using Monte-Carlo simulations of an optically driven Rydberg many body gas in the facilitation regime, we analyze the effects of thermal motion and the network character of the facilitation dynamics in a gas on the universality class of the phase transition. For very high temperatures the system shows mean field dynamics. In the low temperature regime, we show that this phase transition falls into the universality class of directed percolation, provided the underlying network of ground state atoms is above the percolation threshold. With increasing temperature however, long-distance (Levy flight-type) excitations leads the system to display signatures of anomalous directed percolation. If the network of ground state atoms is below the percolation threshold the critical point of the phase transition is replaced by an extended Griffith phase.
*The authors gratefully acknowledge financial support from the DFG through SFB TR 185, project number 277625399.
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