Equation-of-state parameter
= Equation-of-state parameter
A cosmological fluid with constant equation-of-state parameter $w$ has $P=w\rho$ and $\rho\propto a^{-3(1+w)}$.
= Equation-of-state parameter
A cosmological fluid with constant equation-of-state parameter $w$ has $P=w\rho$ and $\rho\propto a^{-3(1+w)}$.