Is a horizonfree cosmology possible?
Abstract
In a space of FRLW models, filled with a single fluid such that its energymomentum tensor satisfies standard energy conditions and the dynamics of the universe is described by a second order differential equation,the existence of particle horizons is a generic property. To remove particle horizons one must invest nearly as much as to remove them together with the initial singularity.
 Publication:

General Relativity and Gravitation
 Pub Date:
 December 1990
 DOI:
 10.1007/BF00756836
 Bibcode:
 1990GReGr..22.1367W