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Monday 6 December 2021   Today  
Events for day: Monday 04 October 2021    
           11:00 - 12:00     Journal Club: Experiment & Phenomenology - google meet
Magnetogenesis from a rotating scalar: scalar chiral magnetic effect


Abstract: The chiral magnetic effect (CME) is a phenomenon in which an electric current is induced parallel to an external magnetic field in the presence of chiral asymmetry in a fermionic system. In this paper, we show that the electric current induced by the dynamics of a pseudo-scalar field which anomalously couples to electromagnetic fields can be interpreted as closely analogous to the CME. In particular, the velocity of the pseudo-scalar field, which is the phase of a complex scalar, indicates that the system carries a global U(1) number asymmetry as the source of the induced current. We demonstrate that an initial kick to the phase-fi ...