" FTP, what is this mysterious acceleration of the universe?
A controversial recent paper by Kolb, Riotto, and others suggested it may not require new physics at all, but instead comes from super-Hubble-size perturbations arising from ordinary inflationary physics. Part of the evidence for it comes from the first peak in the cosmic microwave background, which says Omega total is 1, while other measurements suggest Omega matter is only 0.3. Unlike radiation or ordinary matter, it has a negative equation of state. The simplest explanation is a cosmological constant, while another is a scalar field called "quintessence." FTP, what is this mysterious acceleration of the universe?
A controversial recent paper by Kolb, Riotto, and others suggested it may not require new physics at all, but instead comes from super-Hubble-size perturbations arising from ordinary inflationary physics.
dark energy (accept cosmological constant until it is named)