Chiral magnetic effect, chirality production and Schwinger mechanism

5 Nov 2019, 15:20
20m
Ball Room 2 (Wanda Reign Wuhan Hotel)

Ball Room 2

Wanda Reign Wuhan Hotel

Oral Presentation Chirality, vorticity and spin polarization Parallel Session - Chirality I

Speaker

Shi Pu (USTC, China)

Description

We elucidate chirality production under parity breaking constant electromagnetic fields, with which we clarify qualitative differences in and out of equilibrium. For a strong magnetic field the pair production from the Schwinger mechanism increments the chirality. The pair production rate is exponentially suppressed with mass according to the Schwinger formula, while the mass dependence of chirality production in the axial Ward identity appears in the pesudo-scalar term. We demonstrate that in equilibrium field theory calculus the axial anomaly is canceled by the pseudo-scalar condensate for any mass. In a real-time formulation with in- and out-states, we show that the axial Ward identity leads to the chirality production rate consistent with the Schwinger formula. We illuminate that such an in- and out-states formulation makes clear the chiral magnetic effect in and out of equilibrium, and we discuss further applications to real-time condensates.

Primary authors

Mr Patrick Copinger (University of Tokyo) Prof. Kenji Fukushima (The University of Tokyo) Shi Pu (USTC, China)

Presentation Materials