A unified geometric description of the Universe: from inflation to late-time acceleration without an inflaton nor a cosmological constant

Abstract

We present a cosmological model arising from a gravitational theory with an infinite tower of higher-order curvature invariants that can reproduce the entire evolution of the Universe: from inflation to late-time acceleration, without invoking an inflaton nor a cosmological constant. The theory is Einsteinian-like. The field equations for a Friedmann-Lemaître-Robertson-Walker metric are of second-order and can reproduce a late-time evolution that is consistent with the acceleration provided by the cosmological constant at low redshift. Our results force us to reinterpret the nature of dark energy, becoming a mechanism that is inherited solely from the geometry of spacetime.

Accepted in Physics Letters B. 13 pages, 4 figures

References in corpus (5)

• Einsteinian cubic gravity
• Four-dimensional black holes in Einsteinian cubic gravity
• Aspects of general higher-order gravities
• Extremal Rotating Black Holes in Einsteinian Cubic Gravity
• On the viability of the evolution of the universe with Geometric Inflation

Cited by in corpus (4)

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• Catenoid Inspired Hyperbolic Wormhole Geometry
• Interpreting the Cosmic History of the Universe Through Five-Dimensional Supergravity
• First-order phase transitions and cosmic evolution: thermodynamic approach to generalized holographic dark energy