Unified Dark Energy-Dark Matter model with Inverse Quintessence

Abstract

We consider a model where both dark energy and dark matter originate from the coupling of a scalar field with a non-conventional kinetic term to, both, a metric measure and a non-metric measure. An interacting dark energy/dark matter scenario can be obtained by introducing an additional scalar that can produce non constant vacuum energy and associated variations in dark matter. The phenomenology is most interesting when the kinetic term of the additional scalar field is ghost-type, since in this case the dark energy vanishes in the early universe and then grows with time. This constitutes an "inverse quintessence scenario", where the universe starts from a zero vacuum energy density state, instead of approaching it in the future.

13 pages; minor changes with references added

References in corpus (11)

• Dark Matter: A Primer
• Models for Little Rip Dark Energy
• A two measure model of dark energy and dark matter
• Cosmological tachyon condensation
• Emergent Universe from Scale Invariant Two Measures Theory
• Fine Tuning Free Paradigm of Two Measures Theory: K-Essence, Absence of Initial Singularity of the Curvature and Inflation with Graceful Exit to Zero Cosmological Constant State
• Mini--Review of Dark Matter: 2012
• Absence of the Fifth Force Problem in a Model with Spontaneously Broken Dilatation Symmetry
• Dark Matter: A Brief Review
• Neutrino generated dynamical dark energy with no dark energy field
• Impact of Dynamical Tensions in Modified String and Brane Theories

Cited by in corpus (11)

• A two measure model of dark energy and dark matter
• Unified Dark Energy and Dark Matter from Dynamical Space Time
• Unification of DE-DM from Diffusive Cosmology
• Scale Symmetry Breaking From Total Derivative Densities and the Cosmological Constant Problem
• Dark energy and dark matter unification from dynamical space time: observational constraints and cosmological implications
• Dark D-Brane Cosmology: from background evolution to cosmological perturbations
• K-essence and kinetic gravity braiding models in two-field measure theory
• A Kaluza-Klein Inspired Brans-Dicke Gravity with Dark Matter and Dark Energy Model
• Unified Dark Energy and Dark Matter from Dynamical Spacetime Cosmology
• Cosmology via Metric-Independent Volume-Form Dynamics
• Perturbations and stability conditions of k-essence and kinetic gravity braiding models in two-field measure theory