Constraining scalar-tensor quintessence by cosmic clocks

Abstract

Scalar-tensor quintessence models can be constrained by identifying suitable cosmic clocks which allow to select confidence regions for cosmological parameters. In particular, we constrain the characterizing parameters of non-minimally coupled scalar-tensor cosmological models which admit exact solutions of the Einstein field equations. Lookback time to galaxy clusters at low intermediate, and high redshifts is considered. The high redshift time-scale problem is also discussed in order to select other cosmic clocks such as quasars.

13 pages, 8 figures. to be published in Astron & Astroph

References in corpus (52)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• 4D Gravity on a Brane in 5D Minkowski Space
• Final Results from the Hubble Space Telescope Key Project to Measure the Hubble Constant
• Phantom Energy and Cosmic Doomsday
• Measurements of the Cosmological Parameters Omega and Lambda from the First 7 Supernovae at z >= 0.35
• Cosmological Tracking Solutions
• Curvature Quintessence
• Constraining Cosmological Parameters Based on Relative Galaxy Ages
• Unifying phantom inflation with late-time acceleration: scalar phantom-non-phantom transition model and generalized holographic dark energy
• Reconstruction of a scalar-tensor theory of gravity in an accelerating universe
• Can dark energy evolve to the Phantom?
• Scaling solutions in general non-minimal coupling theories
• Curvature quintessence matched with observational data
• Constraints on the equation of state of dark energy and the Hubble constant from stellar ages and the CMB
• Cosmological scaling solutions of non-minimally coupled scalar fields
• Extended Quintessence
• Where new gravitational physics comes from: M-theory?
• 1/R Curvature Corrections as the Source of the Cosmological Acceleration
• Quintessence, the Gravitational Constant, and Gravity
• Crossing the Phantom Divide: Dark Energy Internal Degrees of Freedom
• Inflation and quintessence with nonminimal coupling
• Cosmological observations in scalar-tensor quintessence
• Quintessence, super-quintessence and observable quantities in Brans-Dicke and non-minimally coupled theories
• Higher order gravity theories and scalar tensor theories
• Testing the Cosmic Coincidence Problem and the Nature of Dark Energy
• Bounds on the possible evolution of the Gravitational Constant from Cosmological Type-Ia Supernovae
• The Case for an Accelerating Universe from Supernovae
• Weak lensing in scalar-tensor theories of gravity
• Accelerated Cosmological Models in First-Order Non-Linear Gravity
• Discovery of an ionized Fe-K edge in the z=3.91 Broad Absorption Line Quasar APM 08279+5255 with XMM-Newton
• Modified Friedmann Equations in R${}^{-1}$-Modified Gravity
• Inhomogeneous Gravity
• Constraining the cosmic equation of state from old galaxies at high redshift
• Structure formation constraints on the Jordan-Brans-Dicke theory
• An old quasar in a young dark energy-dominated universe?
• Constraining dark energy models using the lookback time to galaxy clusters and the age of the universe
• Exponential Potentials for Tracker Fields
• Cosmological implications of APM 08279+5255, an old quasar at z = 3.91
• Accelerating universe in scalar tensor models - confrontation of theoretical predictions with observations
• Age constraints on the cosmic equation of state
• Homogeneity of early-type galaxies across clusters
• Two viable quintessence models of the Universe: confrontation of theoretical predictions with observational data
• Quintessence, scalar-tensor theories and non-Newtonian gravity
• Galaxy evolution in clusters up to z=1.0
• On breaking the age-metallicity degeneracy in early-type galaxies: Outflows versus Star Formation Efficiency
• Extending the Butcher--Oemler effect up to z~0.7
• Non-minimally coupled complex scalar field in classical and quantum cosmology
• Response of distance measures to the equation of state
• On breaking the age-metallicity degeneracy in early-type galaxies: infall versus star formation efficiency
• Using bright ellipticals as dark energy cosmic clocks

Cited by in corpus (13)

• Extended Theories of Gravity
• The age problem in $\Lambda$CDM model
• Noether symmetry for non-minimally coupled fermion fields
• Alleviation of Cosmic Age Problem In Interacting Dark Energy Model
• Modified gravity revealed along geodesic tracks
• Constraining non-minimally coupled tachyon fields by Noether symmetry
• Energy exchange for homogeneous and isotropic universes with a scalar field coupled to matter
• Test of conformal gravity with astrophysical observations
• Analysis of the non-minimally coupled scalar field in the Palatini formalism by the Noether symmetry approach
• An updated analysis of two classes of f(R) theories of gravity
• Dark Sector from Interacting Canonical and Non-Canonical Scalar Fields
• Cosmic expansion from boson and fermion fields
• Conformal coupling associated with the Noether symmetry and its connection with the $\Lambda$CDM dynamics