Spinning Fluids: A Group Theoretical Approach
arXiv:1210.7731 · doi:10.1103/PhysRevD.89.084012
Abstract
We extend the Lagrangian formulation of relativistic non-abelian fluids in group theory language. We propose a Mathisson-Papapetrou equation for spinning fluids in terms of the reduction limit of de Sitter group. The equation we find correctly boils down to the one for non-spinning fluids. We study the application of our results for an FRW cosmological background for fluids with no vorticity and for dusts in the vicinity of a Kerr black hole. We also explore two alternative approaches based on a group theoretical formulation of particles dynamics.
v3. Version appeared in PRD. Significant modifications over v.2, a section on Godel universe added. small typos corrected