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Vorticity Induced by Non-frontal Collisions of Quantum Droplets

  • J. E. Alba-Arroyo
  • Santiago F. Caballero-Benitez
  • Rocio Jáuregui
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Abstract

The rotational dynamics induced by the non-frontal binary collisions of quantum droplets composed of ultracold alkali atoms are analyzed. A theoretical study is presented within the extended Gross-Pitaevskii equation framework, using experimentally feasible conditions. Numerical experiments elucidate a rich landscape of possible topological excitations in the system that are robust towards measurements. The collision of heteronuclear quantum droplets composed of 41K and 87Rb atoms in the incompressible regime gives rise to dynamical instabilities that spontaneously generate topological defects: vortex rings, dislocation lines, and vortices in one species. Their presence depends on the Weber number and the impact parameter. An experimental proposal for vortex detection in both real and Fourier space using interaction ramps is described.

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Cite

BibTeXRIS
BibTeX
@misc{albaarroyo2026vorticity,
  title = {{Vorticity Induced by Non-frontal Collisions of Quantum Droplets}},
  author = {J. E. Alba-Arroyo and Santiago F. Caballero-Benitez and Rocio Jáuregui},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2606.17498},
  eprint = {2606.17498},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2606.17498},
}
RIS
TY  - UNPB
TI  - Vorticity Induced by Non-frontal Collisions of Quantum Droplets
AU  - J. E. Alba-Arroyo
AU  - Santiago F. Caballero-Benitez
AU  - Rocio Jáuregui
PY  - 2026
DA  - 2026/09/12
PB  - arXiv
DO  - 10.48550/arxiv.2606.17498
UR  - https://arxiv.org/abs/2606.17498
AB  - The rotational dynamics induced by the non-frontal binary collisions of quantum droplets composed of ultracold alkali atoms are analyzed. A theoretical study is presented within the extended Gross-Pitaevskii equation framework, using experimentally feasible conditions. Numerical experiments elucidate a rich landscape of possible topological excitations in the system that are robust towards measurements. The collision of heteronuclear quantum droplets composed of ^41K and ^87Rb atoms in the incompressible regime gives rise to dynamical instabilities that spontaneously generate topological defects: vortex rings, dislocation lines, and vortices in one species. Their presence depends on the Weber number and the impact parameter. An experimental proposal for vortex detection in both real and Fourier space using interaction ramps is described.
ER  -