Dynamics and cosmological evolution in $$\Lambda $$-varying cosmology
G. Papagiannopoulos, Pavlina Tsiapi, Spyros Basilakos, Andronikos Paliathanasis
Abstract
Abstract We study the dynamical properties of a large body of varying vacuum cosmologies for which dark matter interacts with vacuum. In particular, performing the critical point analysis we investigate the existence and the stability of cosmological solutions which describe de-Sitter, radiation and matter dominated eras. We find several cases of varying vacuum models that admit stable critical points, hence they can be used in describing the cosmic history.
Topics & Concepts
PhysicsCosmologyDark matterCOSMIC cancer databaseStability (learning theory)Theoretical physicsCosmological modelPhysical cosmologyDark energyDynamics (music)Point (geometry)Classical mechanicsLambda-CDM modelNon-standard cosmologyFalse vacuumMetric expansion of spaceBaryon acoustic oscillationsObservational cosmologyDynamical systems theoryCosmic background radiationCosmic microwave backgroundUniverseBackground radiationInstabilityCosmological constantWork (physics)Inflation (cosmology)Cosmological perturbation theoryScalar field dark matterVacuum energyDynamical system (definition)Critical point (mathematics)AstrophysicsCold dark matterStatistical physicsCosmology and Gravitation TheoriesBlack Holes and Theoretical PhysicsGalaxies: Formation, Evolution, Phenomena