Cosmological signatures of superheavy dark matter
Lingfeng Li, Shiyun Lu, Yi Wang, Siyi Zhou
Abstract
A bstract We discuss two possible scenarios, namely the curvaton mechanism and the dark matter density modulation, where non-Gaussianity signals of superheavy dark matter produced by gravity can be enhanced and observed. In both scenarios, superheavy dark matter couples to an additional light field as a mediator. In the case of derivative coupling, the resulting non-Gaussianities induced by the light field can be large, which can provide inflationary evidences for these superheavy dark matter scenarios.
Topics & Concepts
PhysicsDark matterCoupling (piping)Field (mathematics)AstrophysicsHot dark matterWarm dark matterScalar field dark matterCosmologyDark energyEngineeringPure mathematicsMechanical engineeringMathematicsCosmology and Gravitation TheoriesDark Matter and Cosmic PhenomenaGalaxies: Formation, Evolution, Phenomena