Dark energy and inflation invoked in CCGG by locally contorted space-time

Understand

The cosmological implications of the Covariant Canonical Gauge Theory of Gravity (CCGG) are investigated.

• We deduce that, in a metric compatible geometry, the requirement of covariant conservation of matter invokes torsion of space-time.
• In the Friedman model this leads to a scalar field built from contortion and the metric with the property of dark energy, which transforms the cosmological constant to a time-dependent function.
• Moreover, the quadratic, scale invariant Riemann-Cartan term in the CCGG Lagrangian endows space-time with kinetic energy, and in the field equations adds a geometrical curvature correction to Einstein gravity.