Unification of inflation, dark energy, and dark matter within the Salam-Sezgin cosmological model

Abstract

We investigate a cosmological model, based on the Salam-Sezgin six-dimensional supergravity theory and on previous work by Anchordoqui, Goldberg, Nawata, and Nuñez. Assuming a period of warm inflation, we show that it is possible to extend the evolution of the model back in time, to include the inflationary period, thus unifying inflation, dark matter, and dark energy within a single framework. Like the previous authors, we were not able to obtain the full dark matter content of the Universe from the Salam-Sezgin scalar fields. However, even if only partially successful, this work shows that present-day theories, based on superstrings and supergravity, may eventually lead to a comprehensive modelling of the evolution of the Universe. We find that the gravitational-wave spectrum of the model has a non-constant negative slope in the frequency range 10^(-15)-10^6 rad/s, and that, unlike standard (cold) inflation models, it shows no structure in the MHz/GHz range of frequencies.

arXiv comment10 pages, 10 figures

References in corpus (18)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Warm Inflation
• Towards a Naturally Small Cosmological Constant from Branes in 6D Supergravity
• Warm Inflation and its Microphysical Basis
• Interpolating the Stage of Exponential Expansion in the Early Universe: a possible alternative with no reheating
• Thermal Properties of an Inflationary Universe
• Perturbation Spectra in the Warm Inflationary Scenario
• 3-Branes and Uniqueness of the Salam-Sezgin Vacuum
• Inflation, dark matter and dark energy in the string landscape
• A String and M-theory Origin for the Salam-Sezgin Model
• Triple unification of inflation, dark matter, and dark energy using a single field
• The Ubiquitous Inflaton in String-Inspired Models
• An Exact Calculation of the Energy Density of Cosmological Gravitational Waves
• The Stochastic Gravitational-Wave Background and the Inflation to Radiation Transition in the Early Universe
• The Interaction Structure and Cosmological Relevance of Mass Scales in String Motivated Supersymmetric Theories
• Parametric Resonance and Cosmological Gravitational Waves
• Cosmology from String Theory

Cited by in corpus (22)

• Cosmology and Fundamental Physics with the Euclid Satellite
• Cosmology and fundamental physics with the Euclid satellite
• Generalizing a Unified Model of Dark Matter, Dark Energy, and Inflation with Non Canonical Kinetic Term
• The warm inflation story
• Triple unification of inflation, dark energy, and dark matter in two-scalar-field cosmology
• Unification models with reheating via primordial black holes
• Unified early and late Universe cosmology through dissipative effects in steep quintessential inflation potential models
• Late-time evolution of the Universe within a two-scalar-field cosmological model
• Stochastic gravitational waves from a new type of modified Chaplygin gas
• Coupled dark energy and dark matter from dilatation anomaly
• A note on the relations between thermodynamics, energy definitions and Friedmann equations
• A Non-minimally Coupled Potential for Inflation and Dark Energy after Planck 2015: A Comprehensive Study
• Gravitational wave generation in hybrid quintessential inflationary models
• Multi-field cold and warm inflation and the de Sitter swampland conjectures
• A PAge-like Unified Dark Fluid Model
• Gravitational wave generation in loop quantum cosmology
• Statefinder analysis of the superfluid Chaplygin gas model
• Coupled quintessence inspired by warm inflation
• Gravitational waves from two scalar fields unifying the dark sector with inflation
• Testing the Dark Universe through the Layzer-Irvine Equation
• Gravitational waves from warm inflation in the weak dissipative regime
• Physical Implications and Updated Observational Constraints of the PAge-like Unified Dark Fluid Model