An increase in the dark-energy effect with time (Q1929256)

This article assumes that the Dark Energy (DE) responsible for the cosmic acceleration is due to a hypothetical weak field consisting of particles referred to as ``graviphotons'' (GP). However, contrarily to one affirmation in the text, this hypothesis is just one among hundreds of other possibilities listed in literature. (Actually, all the recent progresses in the field of cosmology are ignored in the bibliography.) In the paper the (arbitrary) assumption \(P_V=-\frac{2}{3}\rho_V c^2\) for the equation of state of GP is made. With this choice \(\Omega_V\) evolves as \(\Omega_V(t)\propto 1/a(t)\equiv 1+z\). The first part of the article is then a trivial proof that can be exemplified in just one statement: since for the non-relativistic particles \(\Omega_N(t)\propto 1/a^3(t)\), then \(\Omega_V(t)/\Omega_N(t)\propto a^2(t)\), thus DE effects increase with time. Eq.~(13) is unintelligible, since from Eq.~(1) one does not expect that the cosmic acceleration \(R(t)\) depends on \(t\) as indicated. In the last part the temperature of the graviphotons is calculated in the hypothesis that GP are relativistic particles.