2023 CAP Congress / Congrès de l'ACP 2023

WITHDRAWN (U*) Sonic Event Horizon in a Bose-Einstein Condensate

21 Jun 2023, 14:30

15m

UNB Tilley Hall (Rm. 205 (max. 85))

Oral Competition (Undergraduate Student) / Compétition orale (Étudiant(e) du 1er cycle) Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM) (DCMMP) W2-7 Condensed matter theory II | Théorie de la matière condensée II (DPMCM)

Speaker

David Tyler (McMaster University)

Description

We consider a one-dimensional flowing Bose-Einstein condensate (BEC). We numerically model the mean-field wave function of this system, and compare our results to an analytical solution derived using the hydrodynamic approximation. We find that a sonic event horizon forms in the BEC, where in one region the flow of the condensate exceeds the speed of sound in the BEC, while across a boundary the opposite holds. We further introduce wave packets into the BEC to investigate their time evolution.