Bulletin of the American Physical Society
52nd Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 66, Number 6
Monday–Friday, May 31–June 4 2021; Virtual; Time Zone: Central Daylight Time, USA
Session E05: Atomic Bose-Einstein Condensates
2:00 PM–3:48 PM,
Tuesday, June 1, 2021
Chair: Cass Sackett, Virginia
Abstract: E05.00007 : Inflationary dynamics and particle production in a toroidal Bose-Einstein condensate*
3:12 PM–3:24 PM
Live
Presenter:
Anshuman Bhardwaj
(Louisiana State University)
Author:
Anshuman Bhardwaj
(Louisiana State University)
Collaboration:
Anshuman Bhardwaj, Dzmitry Vaido, Daniel E. Sheehy
We present a theoretical study of the dynamics of a Bose-Einstein condensate (BEC) trapped inside an expanding toroid that can realize an analog inflationary universe. As the system expands, we find that phonons in the BEC undergo redshift and damping due to quantum pressure effects, owing to the thinness of the ring. We predict that rapidly expanding toroidal BEC’s can exhibit spontaneous particle creation, and study this phenomenon in the context of an initial coherent state wave function. We show how particle creation would be revealed in the atom density and density correlations, and discuss connections to the cosmological theory of inflation.
**National Science Foundation Grant No. DMR-1151717
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