English

Reply to the Comment on "Shell-Shaped Quantum Droplet in a Three-Component Ultracold Bose Gas"

Quantum Gases 2025-10-31 v2

Abstract

In our Letter (Phys. Rev. Lett. 134, 043402 (2025)), we proposed a self-bound shell-shaped BEC in a three-component (1,2,31,2,3) Bose gas, where (2,3)(2,3) and (1,2)(1,2) droplets are linked as core-shell structure. A recent Comment (Ancilotto, 2505.16554) argued that a ``dimer" configuration should be instead the ground state, where (2,3)(2,3) and (1,2)(1,2) stay side-by-side. Moreover, Ancilotto also explored the state formation, finding that a naive trap-release protocol was unable to produce the core-shell structure. In this reply we show that our core-shell structure is an excited state for finite-size systems, while it becomes energetically degenerate with dimer configuration in thermodynamic limit. Furthermore, we find the core-shell structure is locally stable under external perturbations, and if one pays careful attention to mode-matching, a trap-release protocol can well produce this structure.

Keywords

Cite

@article{arxiv.2506.01436,
  title  = {Reply to the Comment on "Shell-Shaped Quantum Droplet in a Three-Component Ultracold Bose Gas"},
  author = {Yinfeng Ma and Xiaoling Cui},
  journal= {arXiv preprint arXiv:2506.01436},
  year   = {2025}
}

Comments

2 pages, 3 figures; with more details compared to published version in PRL. Reply to arXiv:2505.16554