2001/05/17 by Michael Doran, Doran, Michael, Matthew Lilley +6
Earth and Planetary Sciences · Economics, Econometrics and Finance · Physics and Astronomy · #Astrophysics (astro-ph) #Cosmology and Gravitation Theories #FOS: Physical sciences #Geophysics and Gravity Measurements #Stochastic processes and financial applications #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0105306
Contribution to the proceedings of Moriond 01, Very High Energy Phenomena in the Universe, Les Arcs, France (January 20-27, 2001)
arxiv created 2001/05/17 · openalex publication_date 2001/05/17 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A hypothetical dark energy component may have an equation of state that is different from a cosmological constant and possibly even changing in time. The spacing of the cosmic microwave background peaks is sensitive to the ratio of the horizon sizes today and at last scattering and therefore to the details of the cosmological evolution. Together with independent measurements of today's cosmological parameters, this restricts quintessence models in the epoch before and during decoupling. For fixed Ωb0, Ωcdm0 and h, we give an analytic estimate of the spacing that depends on Ωϕls, Ωϕ0 and an effective equation of state of the dark energy component.