6533b836fe1ef96bd12a0b0b
RESEARCH PRODUCT
Minimal noncanonical cosmologies
Joseph D. LykkenGabriela Barenboimsubject
Inflation (cosmology)PhysicsNuclear and High Energy PhysicsElectroweak interactionAstrophysics (astro-ph)FOS: Physical sciencesFísicaAstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysicsBaryogenesisTheoretical physicsGeneral Relativity and Quantum CosmologyScalar fieldQuintessencedescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-04-25 |