Quintessence and CMB
Crooks, James L. · Dunn, James O. · Frampton, Paul H. · Ng, Y. Jack
Original · EN
A particular kind of quintessence is considered, with equation of motion pQ/ρQ = -1, corresponding to a cosmological term with time-dependence Λ(t) = Λ(t₀) (R(t₀)/R(t))ᵖ which we examine initially for 0 ≤ P < 3. Energy conservation is imposed, as is consistency with big-bang nucleosynthesis, and the range of allowed P is thereby much restricted to 0 ≤ P < 0.2. The position of the first Doppler peak is computed analytically and the result combined with analysis of high-Z supernovae to find how values of Ωₘ and ΩΛ depend on P.
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