This issue was formally introduced in a paper by Charles Misner, who suggested that a "Mixmaster" solution of the field equations would imply a chaotic Hubble sphere and resolve this this quandary.
One theory that attempts to resolve this quandary proposes two shape parameters named beta plus and beta minus that control expansion and contraction, but that theory was ultimately rejected because its topological entropy was higher than observed. That theory that solves this dilemma is very similar to the evolving Belinsky-Khalatnikov-Lifshitz singularity. This issue was formally introduced in a paper by Charles Misner, who suggested that a "Mixmaster" solution of the field equations would imply a chaotic Hubble sphere and resolve this this quandary. One method of resolving this conundrum is to have an exponentially increasing scale factor so that two particles on the opposite ends of the namesake structure could have been in causal contact with each other long ago. For 10 points, name this problem that asks why the universe is so isotropic with respect to temperature, and which can be resolved using the theory of cosmic inflation.
One theory that attempts to resolve this quandary proposes two shape parameters named beta plus and beta minus that control expansion and contraction, but that theory was ultimately rejected because its topological entropy was higher than observed.
horizon problem