Dynamics and uncertainty for maximally entangled bipartite system constrained on a helicoid Asma Bashir, M. A. Wasay, A. Al-Mogeeth and Q. H. Liu Eur. Phys. J. C, 82 9 (2022) 812 Published online: 13 September 2022 DOI: 10.1140/epjc/s10052-022-10765-4