2016/08/20 by David W. Essex, Essex, David W.
Physics and Astronomy · Computer Science · #Cosmology and Gravitation Theories #Computational Physics and Python Applications #Scientific Research and Discoveries
paper · pdf · doi:10.48550/arxiv.1608.06840
The expansion history of the Universe is calculated using a simple model in which the entire rest mass energy of a massive particle is distributed throughout the set of Machian strings connecting it to all the other particles in the observable Universe. With the assumption that the energy in a Machian string has the form of positive Newtonian potential energy, the deceleration rates in the radiation and matter eras are exactly the same as in the conventional ΛCDM model. The transition from deceleration to acceleration at the present time is obtained by making the simplest possible modification of the Newtonian potential energy to represent the effect of the cosmological expansion. The effective dark matter and dark energy densities are calculated in terms of the speed of the Hubble flow at the radius of the observable Universe.