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.

10 pages, 10 figures

References in corpus (5)

• Warm Inflation and its Microphysical Basis
• Inflation, dark matter and dark energy in the string landscape
• Triple unification of inflation, dark matter, and dark energy using a single field
• Parametric Resonance and Cosmological Gravitational Waves
• Cosmology from String Theory

Cited by in corpus (11)

• Generalizing a Unified Model of Dark Matter, Dark Energy, and Inflation with Non Canonical Kinetic Term
• The warm inflation story
• 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
• Multi-field cold and warm inflation and the de Sitter swampland conjectures
• A PAge-like Unified Dark Fluid 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