Equation Icon  2 H2 = ± κ-(ρ± ± ρℰ±), (400 ) ± 3 ¨ ˙ ˙2 κ2 [ 2d¯ ] d¯+ 3H+ ¯d − ¯d = --- ρ+ − 3p+ + e (ρ− − 3p − ) . (401 ) 6