Speaker
Description
We investigate a rotating quantum system subjected to a co-aligned external magnetic field. The gauge-invariant kinetic angular momentum is of particular importance because as the thermodynamic conjugate of the angular velocity, it determines the equilibrium state. Its relevance is further motivated by experimental observations of extreme fluid vorticity in heavy-ion collisions. We develop a numerical framework that tracks the kinetic angular momentum as functions of the magnetic field and angular velocity. This allows us to reproduce the large-field behavior and further trace its evolution to the weak-field region by including higher Landau levels, where a finite-volume boundary condition, imposed to preserve causality, plays a crucial role. We further analyze the spatial profiles of the electric and chiral currents. For a finite-volume system, we find a nontrivial spatial distribution of the azimuthal electric current. In addition, we observe a closed-loop azimuthal circulation for the chiral current, although its net flux vanishes under the imposed boundary condition.
