Quintessential inflation from a variable cosmological constant in a 5D vacuum

Abstract

We explore an effective 4D cosmological model for the universe where the variable cosmological constant governs its evolution and the pressure remains negative along all the expansion. This model is introduced from a 5D vacuum state where the (space-like) extra coordinate is considered as noncompact. The expansion is produced by the inflaton field, which is considered as nonminimally coupled to gravity. We conclude from experiental data that the coupling of the inflaton with gravity should be weak, but variable in different epochs of the evolution of the universe.

final version (figure included)

References in corpus (3)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Equivalence Between Space-Time-Matter and Brane-World Theories
• Decaying cosmological parameter in the early universe from NKK theory of gravity

Cited by in corpus (10)

• Quintessential Inflation with $\alpha$-attractors
• Variable gravity: A suitable framework for quintessential inflation
• Quintessential inflation with canonical and noncanonical scalar fields and Planck 2015 results
• Unification of inflation and dark energy {\it à la} quintessential inflation
• Non-minimal gravitational reheating during kination
• Warm Little Inflaton becomes Dark Energy
• What is needed of a scalar field if it is to unify inflation and late time acceleration ?
• Constraining the quintessential $\alpha$-attractor inflation through dynamical horizon exit method
• Passing to an effective 4D phantom cosmology from 5D vacuum theory of gravity
• Reheating constraints and the $H_0$ tension in Quintessential Inflation