Rotating relativistic superfluid

Abstract

Relativistic equation of state and velocity comparable with the speed of light are included in consideration of a superfluid rotating in a cylindrical container. Minimizing the free energy, we derive the equation of motion. It admits an analytic solution, the solid-body rotation inside and irrotational motion near the walls of the vessel, providing the vortex quantum is not extremely high with respect to the particle rest mass that is satisfied for real astrophysical objects. The relativistic velocity of the vessel and the relativistic equation of state results to the deviation of the angular velocity of the solid-body motion inside and that of the vessel. The boundary between the solid-body and irrotational motion is also shifted sufficiently leading to a difference between the total angular momentum of superfluid and the normal matter.