4.6 Article

Inflationary dynamics and particle production in a toroidal Bose-Einstein condensate

Journal

PHYSICAL REVIEW A
Volume 103, Issue 2, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.103.023322

Keywords

-

Funding

  1. Department of Physics and Astronomy at LSU
  2. LSU
  3. National Science Foundation [DMR-1151717]

Ask authors/readers for more resources

This theoretical study examines the dynamics of a Bose-Einstein condensate trapped inside an expanding toroid that mimics an inflationary universe. As the system expands, phonons in the BEC experience redshift and damping, leading to spontaneous particle creation and impacting atom density and density correlations. The predictions and findings in this study provide insights into connections between the dynamics of BEC and inflationary cosmological theories.
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.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available