On the coupling between spinning particles and cosmological gravitational waves

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dc.creatorMilillo, Irene
dc.creatorLattanzi, Massimiliano
dc.creatorMontani, Giovanni
dc.date2008-04-03
dc.date.accessioned2026-07-07T11:14:20Z
dc.date.available2026-07-07T11:14:20Z
dc.descriptionThe influence of spin in a system of classical particles on the propagation of gravitational waves is analyzed in the cosmological context of primordial thermal equilibrium. On a flat Friedmann-Robertson-Walker metric, when the precession is neglected, there is no contribution due to the spin to the distribution function of the particles. Adding a small tensor perturbation to the background metric, we study if a coupling between gravitational waves and spin exists that can modify the evolution of the distribution function, leading to new terms in the anisotropic stress, and then to a new source for gravitational waves. In the chosen gauge, the final result is that, in the absence of other kind of perturbations, there is no coupling between spin and gravitational waves.
dc.description4 pages, to appear in Proceedings of the II Stueckelberg Workshop - Int. J. Mod. Phys. A
dc.identifierhttps://arxiv.org/abs/0804.0572
dc.identifierhttp://arxiv.org/abs/0804.0572
dc.identifierInt.J.Mod.Phys.A23:1278-1281,2008
dc.identifierdoi:10.1142/S0217751X08040226
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/192033
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.titleOn the coupling between spinning particles and cosmological gravitational waves
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