Anomalous quantum reflection as a quasi-dynamical damping effect
Alexander Jurisch, Jan-Michael Rost
TL;DR
This paper presents a quasi-analytical theory explaining the anomalous quantum reflection of Bose-Einstein condensates, linking decay dynamics to reflection amplitude and highlighting the role of particle interactions.
Contribution
It introduces a novel quasi-analytical approach to understand quantum reflection anomalies in BECs, emphasizing the impact of repulsive interactions.
Findings
Derived decay-width expressions for BECs
Established relation between decay-law and reflection amplitude
Explained quantum reflection anomaly as interaction-driven
Abstract
We develop a quasi-analytical theory for the quantum reflection amplitude of Bose-Einstein condensates. We derive and calculate the decay-width of a Bose-Einstein condensate. A general relation between the time-dependent decay-law of the system and its quantum reflection amplitude allows us to explain the quantum reflection anomaly of Bose-Einstein condensates present in BEC-surface systems as a direct consequence of the repulsive particle interaction.
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