Vorticity Induced by Non-frontal Collisions of Quantum Droplets

• URL: http://arxiv.org/abs/2606.17498v2
• Date: Thu, 18 Jun 2026 07:16:32 GMT
• Title: Vorticity Induced by Non-frontal Collisions of Quantum Droplets
• Abstract summary: The rotational dynamics induced by the non-frontal binary collisions of quantum droplets composed of ultracold alkali atoms are analyzed.<n>The collision of heteronuclear quantum droplets composed of $41$K and $87$Rb atoms in the incompressible regime gives rise to dynamical instabilities that spontaneously generate topological defects.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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 $^{41}$K and $^{87}$Rb 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.

Related papers

• Breathing mode of quantum droplets in dipolar quantum gases: A sum-rule analysis [7.809635348931763]
  We theoretically investigate the ground-state properties and breathing-mode collective excitations of three-dimensional dipolar Bose gases in anisotropic harmonic traps.<n>Our work offers a rigorous and highly accurate framework to characterize collective excitations in dipolar quantum gases.
  arXiv  Detail & Related papers  (2026-06-28T12:23:25Z)
• Quantum turbulence in the many-body regime [39.146761527401424]
  We discuss phenomenology associated with turbulent hydrodynamics in quantum fluids from a condensed-matter perspective.<n>Considering the effect of quantum fluctuations beyond the mean-field approximation, we propose a study of many-body quantum effects in turbulent hydrodynamics.
  arXiv  Detail & Related papers  (2026-06-22T18:06:11Z)
• Symmetry-protected topology and deconfined solitons in a multi-link $\mathbb{Z}_2$ gauge theory [45.88028371034407]
  We study a $mathbbZ$ lattice gauge theory defined on a multi-graph with links that can be visualized as great circles of a spherical shell.<n>We show that this leads to state-dependent tunneling amplitudes underlying a phenomenon analogous to the Peierls instability.<n>By performining a detailed analysis based on matrix product states, we prove that charge deconfinement emerges as a consequence of charge-fractionalization.
  arXiv  Detail & Related papers  (2026-03-02T22:59:25Z)
• Physics-constrained Gaussian Processes for Predicting Shockwave Hugoniot Curves [39.92721695835137]
  A physics-constrained Gaussian Process regression framework is developed for predicting shocked material states along the Hugoniot curve.<n>The framework reproduces the Hugoniot curve with satisfactory accuracy while also quantifying the uncertainty in the predictions.
  arXiv  Detail & Related papers  (2026-01-10T18:54:24Z)
• Real-time collisions of fractional charges in a trapped-ion Jackiw-Rebbi field theory [39.146761527401424]
  We study the effect of back-reaction and quantum fluctuations on the coupled dynamics of the full fermion-boson system.<n>Our results reveal how back-reaction and quantum fluctuations modify the stability and real-time evolution of fractionalized fermions.
  arXiv  Detail & Related papers  (2025-12-08T17:34:53Z)
• Caustics in a Near-Resonant Quantum Kicked Rotor [9.121945883412755]
  In this paper, we investigate the dynamics of the quantum kicked rotor in the near-resonant regime.<n>We analytically determine the locations of the caustic singularity and its recurring (or oscillating) period.<n>We also discuss the classical-quantum correspondence of the caustic singularity and find that chaos can disrupt the phase matching.
  arXiv  Detail & Related papers  (2025-07-21T13:56:53Z)
• Topological crystals and soliton lattices in a Gross-Neveu model with Hilbert-space fragmentation [39.146761527401424]
  We explore the finite-density phase diagram of the single-flavour Gross-Neveu-Wilson (GNW) model.<n>We find a sequence of inhomogeneous ground states that arise through a real-space version of the mechanism of Hilbert-space fragmentation.
  arXiv  Detail & Related papers  (2025-06-23T14:19:35Z)
• Experimental Observation of Single- and Multi-Site Matter-Wave Solitons in 1D Optical Lattices [0.0]
  We report the experimental observation of discrete bright matter-wave solitons with attractive interaction in an optical lattice.<n>Results reveal the existence and characteristics of these solitons across a range of lattice depths and spacings.
  arXiv  Detail & Related papers  (2025-04-15T10:17:12Z)
• Dynamics of Topological Defects in a Rashba Spin-Orbit Coupled Bose-Einstein Condensate [14.50864620620941]
  We investigate the quench dynamics of a two-dimensional Rashba spin-orbit coupled Bose-Einstein condensate.<n>During this quench, topological defects emerge in the form of vortices.
  arXiv  Detail & Related papers  (2024-12-25T09:31:42Z)
• Ultracold Neutrons in the Low Curvature Limit: Remarks on the post-Newtonian effects [49.1574468325115]
  We apply a perturbative scheme to derive the non-relativistic Schr"odinger equation in curved spacetime. We calculate the next-to-leading order corrections to the neutron's energy spectrum. While the current precision for observations of ultracold neutrons may not yet enable to probe them, they could still be relevant in the future or in alternative circumstances.
  arXiv  Detail & Related papers  (2023-12-30T16:45:56Z)
• Rotational dynamics induced by low energy binary collisions of quantum droplets [0.0]
  We focus on quantum droplets formed by dilute Bose gases made up from binary mixtures of alkaline atoms. The stability of the ground state is known to be longer for the chosen heteronuclear gases than for the homonuclear ones.
  arXiv  Detail & Related papers  (2023-04-06T21:21:41Z)
• Gauge-theoretic origin of Rydberg quantum spin liquids [0.0]
  We introduce an exact relation between an Ising-Higgs lattice gauge theory on the kagome lattice and blockaded models on Ruby lattices. This relation elucidates the origin of previously observed topological spin liquids by directly linking the latter to a deconfined phase of a solvable gauge theory.
  arXiv  Detail & Related papers  (2022-05-25T18:19:26Z)
• Dynamical solitons and boson fractionalization in cold-atom topological insulators [110.83289076967895]
  We study the $mathbbZ$ Bose-Hubbard model at incommensurate densities. We show how defects in the $mathbbZ$ field can appear in the ground state, connecting different sectors. Using a pumping argument, we show that it survives also for finite interactions.
  arXiv  Detail & Related papers  (2020-03-24T17:31:34Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.