Friedmann Equation With Cosmological Constant. Indeed the left hand side of 7 is the most general local coordinate invariant divergenceless symmetric two index tensor we can construct solely from the metric and its first and second derivatives. The cosmological constant a in the friedmann equations may be treated as a constant vac uum energy pace with pressure pa.
He added a term which he called the cosmological constant which puts the friedmann equation in the form. The value is based on recent measurements of vacuum energy density ρ vacuum 5 96 10 27 kg m 3. 1017 m2 s 2 or as 10 122 by multiplication with square planck length i e.
The form of d ℓ2 shows us that k can be interpreted in terms of the sign of the spatial curvature.
The cosmological constant a in the friedmann equations may be treated as a constant vac uum energy pace with pressure pa. Ds2 dt2 a2 dr2 1 kr2 r2dθ2 r2sin2θdϕ2. It is often expressed as 10 35 s 2 by multiplication with c2 i e. He added a term which he called the cosmological constant which puts the friedmann equation in the form.
