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DOE OSTI · 1629988

Spin Hydrodynamic Generation in the Charged Subatomic Swirl

Guo, Xingyu·Liao, Jinfeng·Wang, Enke
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Abstract

Recently there have been signifcant interests in the spin hydrodynamic generation phenomenon from multiple disciplines of physics. Such phenomenon arises from global polarization efect of microscopic spin by macroscopic fuid rotation and is expected to occur in the hot quark-gluon fuid (the “subatomic swirl”) created in relativistic nuclear collisions. This was indeed discovered in experiments which however revealed an intriguing puzzle: a polarization diference between particles and anti-particles. We suggest a novel application of a general connection between rotation and magnetic feld: a magnetic feld naturally arises along the fuid vorticity in the charged subatomic swirl. We establish this mechanism as a new way for generating long-lived in-medium magnetic feld in heavy ion collisions. Due to its novel feature, this new magnetic feld provides a nontrivial explanation to the puzzling observation of a diference in spin hydrodynamic generation for particles and anti-particles in heavy ion collisions.

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS

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Guo, Xingyu, Liao, Jinfeng, Wang, Enke. 2020-02-10. Spin Hydrodynamic Generation in the Charged Subatomic Swirl. https://doi.org/10.1038/s41598-020-59129-6

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