Speaker
Description
The mean value of the axial current in a medium of fermions that has both acceleration and vorticity is calculated using two different methods: the covariant Wigner function for fermions and the local thermodynamic equilibrium density operator in the Zubarev approach. The existence of the Chiral Vortical Effect is confirmed, and the higher order corrections in vorticity and acceleration are calculated. The two methods give the same result when describing effects associated with vorticity, but differ when describing the effects of acceleration. It is shown on the basis of the Wigner function that acceleration plays the role of an imaginary chemical potential in the hydrodynamics of fermions. This fact leads to instability at temperatures below the Unruh temperature, which may be an indication of the Unruh effect for fermions. In conclusion, we discuss the possibility of observing quantum effects associated with acceleration and vorticity in experiments on particle accelerators.
| Track | Hydrodynamics, chirality and vorticity |
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