Cosmological continuity equation
= Cosmological continuity equation
Energy conservation in FLRW gives $\dot\rho=-3H(\rho+P)$ when $\rho$ and $P$ are energy density and pressure.
= Cosmological continuity equation
Energy conservation in FLRW gives $\dot\rho=-3H(\rho+P)$ when $\rho$ and $P$ are energy density and pressure.