2020/02/13 by Xingyu Guo, Jinfeng Liao, Enke Wang · 10 citations
Chemistry · Physics and Astronomy · #Chemistry #Condensed matter physics #Electromagnet #Elementary particle #High-Energy Particle Collisions Research #Ionosphere and magnetosphere dynamics #Magnet #Magnetic energy #Magnetic field #Magnetization #Mechanics #Nuclear physics #Physics #Polarization (electrochemistry) #Quantum mechanics #Solar and Space Plasma Dynamics #Subatomic particle #Vortex #Vorticity #hep-ph #nucl-th
paper · pdf · doi:10.1016/j.nuclphysa.2020.121917
published in Nuclear Physics A 1005, 121917 (Elsevier BV) · Contribution to the Proceedings of the 28th international conference on ultrarelativistic nucleus-nucleus collisions
arxiv created 2020/02/13 · openalex publication_date 2020/12/11 · arxiv updated 2021/02/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We report a novel relation between rotation and magnetic field in a charged fluid system: there is naturally a magnetic field along the direction of fluid vorticity due to the currents associated with the swirling charges. This general connection is demonstrated using a fluid vortex. Applying the idea to heavy ion collisions we propose a new mechanism for generating in-medium magnetic field with a relatively long lifetime. We estimate the magnitude of this new magnetic field in the Au-Au colliding systems across a wide span of collisional beam energy. Such a magnetic field is found to increase rapidly toward lower beam energy and could account for a significant amount of the experimentally observed global polarization difference between hyperons and anti-hyperons.