Spin-density and Vorticity Contribution to the Cosmological Background

TL;DR

This paper develops a group-theoretic framework for relativistic spinning fluids with vorticity and spin density, enabling the study of their effects on cosmological backgrounds.

Contribution

It introduces a novel formulation of spinning fluids using group theory, linking Mathisson-Papapetrou equations to de Sitter group contractions for cosmological applications.

Findings

Framework for analyzing spinning fluids in cosmology

Connection between group theory and fluid dynamics equations

Potential insights into vorticity effects in the universe

Abstract

Relativistic non-Abelian spinning fluids can be formulated in group theory language, where the corresponding Mathisson-Papapetrou equation for spinning fluids can be obtained in terms of a specific de Sitter group contraction. This framework is very suitable for studying the effects of a spinning fluid of matter with vorticity and a spin density in a cosmological background.