The Averaging Problem in Cosmology and Macroscopic Gravity

Understand

The averaging problem in cosmology and the approach of macroscopic gravity to resolve the problem is discussed.

• The averaged Einstein equations of macroscopic gravity are modified on cosmological scales by the macroscopic gravitational correlation tensor terms as compared with the Einstein equations of general relativity.
• This correlation tensor satisfies a system of structure and field equations.
• An exact cosmological solution to the macroscopic gravity equations for a constant macroscopic gravitational connection correlation tensor for a flat spatially homogeneous, isotropic macroscopic space-time is presented.