[Hybrid RBRC seminar] Space-time dynamics of CME current in hot strongly coupled non-abelian plasma

by Sebastian Grieninger (Stony Brook)

Thursday 13 Apr 2023, 12:30 → 13:30 US/Eastern

2-160 (https://bnl.zoomgov.com/j/1606067399?pwd=am02b0xIUXZ6TDR3d1dWL05TTDdaUT09)

We show that correlations of electric currents which are directly relevant for the experimental observation of the CME in heavy-ion collisions are sensitive to topology at large distances. In a non-abelian plasma with chiral fermions, local axial charge can be generated either by topological fluctuations which are creating domains with non-zero winding number or by thermal fluctuations. Within holography, we investigate dynamical creation of axial charge and isolate the imprint of the topological dynamics on the electric current. In particular, we show that the spatial extent of the imprint grows with time which is consistent with sphaleron-like dynamics and give numerical estimates for its size.