Speaker
Description
We study the effect of rotation on the confining and chiral properties of QCD using the linear sigma model coupled to the Polyakov loop in an attempt to resolve discrepancies between the first-principle numerical and model-based analytical results. The attractive features of this model are renormalizability and the presence of the coupling between chiral and confining degrees of freedom.
We carefully enforce the causality constraint by implementing the spectral boundary conditions at the boundary of a cylinder. Working in a homogeneous approximation, we obtain the phase diagram at finite temperature, baryon density, and angular frequency. We demonstrate that in this model, the critical temperatures of both transitions diminish in response to the increasing rotation, being in contradiction with the first-principle lattice results. Surprisingly, despite the complicated structure of the spectrum caused by the presence of the boundaries, the thermodynamics of the model follows closely the simple Tolman-Ehrenfest law.
