2015/04/10 by Peter R. Phillips, Phillips, Peter R. · 1 citation
Physics and Astronomy · Earth and Planetary Sciences · #Cosmology and Gravitation Theories #Black Holes and Theoretical Physics #Geophysics and Gravity Measurements
paper · pdf · doi:10.48550/arxiv.1504.02702
We modify the action of Mannheim's conformally invariant model by changing the sign of two coefficients. This breaks conformal symmetry, but results in a cosmology that has a positive effective G and at the same time retains one of the main advantages of the Mannheim model, a possible solution of the cosmological constant problem.