Spin precession in anisotropic cosmologies
arXiv:1510.08253 · doi:10.1140/epjc/s10052-016-4141-6
Abstract
We consider the precession of a Dirac particle spin in some anisotropic Bianchi universes. This effect is present already in the Bianchi-I universe. We discuss in some detail the geodesics and the spin precession for both the Kasner and the Heckmann-Schucking solutions. In the Bianchi-IX universe the spin precession acquires the chaotic character due to the stochasticity of the oscillatory approach to the cosmological singularity. The related helicity flip of fermions in the very early Universe may produce the sterile particles contributing to dark matter.
15 pages, 1 figure
References in corpus (8)
- Spin dynamics in gravitational fields of rotating bodies and the equivalence principle
- Equivalence principle and experimental tests of gravitational spin effects
- Dirac fermions in strong gravitational fields
- Emergent Spacetime in Stochastically Evolving Dimensions
- Cosmic Jets
- Double-Kasner Spacetime: Peculiar Velocities and Cosmic Jets
- Melvin Magnetic Fluxtube/Cosmology Correspondence
- Vanishing dimensions: Review