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arXiv · 2505.09474

Surface excitation of Rydberg dressed quantum droplet of Bose-Einstein Condensates

Avra Banerjee·Dwipesh Majumder
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Abstract

We have considered a quantum droplet of two components of Bose-Einstein condensate (BEC) inside the electron of a Rydberg atom to study the surface mode of collective excitation using the Bogoliubov theory of excitation. We have calculated the surface excitation spectrum for various Rydberg electron-atom interaction strengths. From the energy spectrum, we calculated the surface tension of the droplet as a function of Rydberg electron-atom interaction strength. Our study shows that the electron-atom interaction enhances the surface energy; hence, the droplet will be more stable inside the electron of a Rydberg atom.

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Avra Banerjee, Dwipesh Majumder. 2025-05-14. Surface excitation of Rydberg dressed quantum droplet of Bose-Einstein Condensates. https://doi.org/10.1016/j.aop.2024.169810

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