Speaker: Anshuman Bhardwaj, LSU
Place: The Cloud
Date: Thursday Oct 21st
Time: 11am Central.
Date: Thursday Oct 21st
Time: 11am Central.
Zoom Link
https://lsu.zoom.us/j/6541089114
Title: Inflationary dynamics and particle production in a toroidal Bose-Einstein condensate
Abstract:
Abstract: 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.
Bio
Anshuman is a PhD student at LSU, working under the supervision of Prof. Dan Sheehy on condensed matter theory
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