Phase-space analysis of torsion-coupled dilatonic ghost condensate
arXiv:2306.03386 · doi:10.1140/epjc/s10052-024-12653-5
Abstract
We studied the cosmological dynamics of a dilatonic ghost condensate field as a source of dark energy, which is non-minimally coupled to gravity through torsion. We performed a detailed phase-space analysis by finding all the critical points and their stability conditions. Also, we compared our results with the latest and Supernovae Ia observational data. In particular, we found the conditions for the existence of scaling regimes during the dark matter era. Furthermore, we obtained the conditions for a successful exit from the scaling regime, such that, at late times, the universe tends towards an attractor point describing the dark energy-dominated era. These intriguing features can allow us to alleviate the energy scale problem of dark energy since, during a scaling regime, the field energy density is not necessarily negligible at early times.
arXiv comment12 pages, 16 figures, 3 Tables. Updated to match the published version in EPJC
References in corpus (62)
- Dynamics of dark energy
- f(R) theories
- The Complete Light-curve Sample of Spectroscopically Confirmed Type Ia Supernovae from Pan-STARRS1 and Cosmological Constraints from The Combined Pantheon Sample
- Cosmology and the Fate of Dilatation Symmetry
- A Dynamical Solution to the Problem of a Small Cosmological Constant and Late-time Cosmic Acceleration
- The galileon as a local modification of gravity
- Essentials of k-essence
- Models of f(R) Cosmic Acceleration that Evade Solar-System Tests
- Chameleon Fields: Awaiting Surprises for Tests of Gravity in Space
- Constraints on the redshift dependence of the dark energy potential
- Dark torsion as the cosmic speed-up
- Quintessence and the Rest of the World
- Cosmic Chronometers: Constraining the Equation of State of Dark Energy. I: H(z) Measurements
- Einstein's Other Gravity and the Acceleration of the Universe
- Covariant Galileon
- Raising the bar: new constraints on the Hubble parameter with cosmic chronometers at z2
- Improved constraints on the expansion rate of the Universe up to z~1.1 from the spectroscopic evolution of cosmic chronometers
- The WiggleZ Dark Energy Survey: Joint measurements of the expansion and growth history at z < 1
- Class of viable modified gravities describing inflation and the onset of accelerated expansion
- Ghost Condensation and a Consistent Infrared Modification of Gravity
- Implications of the Neutron Star Merger GW170817 for Cosmological Scalar-Tensor Theories
- Quintessence: A Review
- The phantom menaced: constraints on low-energy effective ghosts
- Age-dating Luminous Red Galaxies observed with the Southern African Large Telescope
- Quasar-Lyman Forest Cross-Correlation from BOSS DR11 : Baryon Acoustic Oscillations
- Ghost Inflation
- Cosmological Dynamics of Phantom Field
- Detecting Dark Energy in Orbit -- the Cosmological Chameleon
- Dilatonic ghost condensate as dark energy
- Hubble parameter measurement constraints on the redshift of the deceleration-acceleration transition, dynamical dark energy, and space curvature
- "Teleparallel" Dark Energy
- Ghosts in Massive Gravity
- Vector Field Models of Inflation and Dark Energy
- Could dark energy be vector-like?
- Torsion Gravity: a Reappraisal
- Coupled dark energy: Towards a general description of the dynamics
- Gravitational Energy-Momentum Density in Teleparallel Gravity
- Early Dark Energy Cosmologies
- Cosmology in generalized Proca theories
- The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations in the correlation function of LOWZ and CMASS galaxies in Data Release 12
- Scaling attractors in interacting teleparallel dark energy
- Constraints on dark energy dynamics and spatial curvature from Hubble parameter and baryon acoustic oscillation data
- Interpreting cosmological tensions from the effective field theory of torsional gravity
- Dynamical features of scalar-torsion theories
- Cosmological dynamics of tachyonic teleparallel dark energy
- Gauge Structure of Teleparallel Gravity
- Cosmological dynamics of dark energy in scalar-torsion gravity
- Cosmological data favor Galileon ghost condensate over CDM
- The Ghost Condensate in N=1 Supergravity
- A novel teleparallel dark energy model
- Reconstructing inflation in scalar-torsion gravity
- Stability of scalar perturbations in scalar-torsion gravity theories in the presence of a matter fluid
- Generating primordial fluctuations from modified teleparallel gravity with local Lorentz-symmetry breaking
- Slow-roll inflation in generalized scalar-torsion gravity
- The role of the tachyonic instability in Horndeski gravity
- Growth of matter overdensities in non-minimal torsion-matter coupling theories
- Suppressed cosmic growth in coupled vector-tensor theories
- Ghost condensates and pure kinetic -essence condensates in presence of field-fluid non-minimal coupling in the dark sector
- New scaling solutions in cubic Horndeski theories
- Inflation and Primordial Fluctuations in Gravity's Rainbow
- Chaotic Inflation and Reheating in Generalized Scalar-Tensor Gravity
- Dynamics of dark energy in a scalar-vector-torsion theory