Chaotic motion of particles in the spacetime of a Kerr black hole immersed in swirling universesDeshui Cao, Lina Zhang, Songbai Chen, Qiyuan Pan and Jiliang JingEur. Phys. J. C, 85 1 (2025) 28DOI: https://doi.org/10.1140/epjc/s10052-025-13749-2