2006/04/25 by Gabriela Barenboim, Joseph D. Lykken, Joseph D Lykken · 13 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology #Cosmology and Gravitation Theories #Field (mathematics) #Noncommutative and Quantum Gravity Theories #Quantum field theory #Scalar (mathematics) #Scalar field #Standard Model (mathematical formulation) #astro-ph
paper · pdf · doi:10.1088/1126-6708/2006/07/016
published in Journal of High Energy Physics 2006(07), 016 (Springer Nature) · 20 pages, 5 figures, 3 tables
arxiv created 2006/04/25 · openalex publication_date 2006/07/13 · arxiv updated 2014/10/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We demonstrate how much it is possible to deviate from the standard cosmological paradigm of inflation-assisted LambdaCDM, keeping within current observational constraints, and without adding to or modifying any theoretical assumptions. We show that within a minimal framework there are many new possibilities, some of them wildly different from the standard picture. We present three illustrative examples of new models, described phenomenologically by a noncanonical scalar field coupled to radiation and matter. These models have interesting implications for inflation, quintessence, reheating, electroweak baryogenesis, and the relic densities of WIMPs and other exotics.