Cosmic Acceleration with Torsion and Non-metricity in Friedmann-like Universes

Abstract

Starting from the generalized Raychaudhuri equation with torsion and non-metricity, and considering an FLRW spacetime we derive the most general form of acceleration equation in the presence of torsion and non-metricity. That is we derive the cosmic acceleration equation when the nonRiemannian degrees of freedom are also taken into account. We then discuss some conditions under which torsion and non-metricity accelerate/decelerate the expansion rate of the Universe.

6 pages, no figures

References in corpus (5)

• Relativistic cosmology and large-scale structure
• Metric-affine Gravity and Inflation
• Cosmological Hyperfluids, Torsion and Non-metricity
• Probing non-Riemannian spacetime geometry
• Raychaudhuri equation in spacetimes with torsion

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