Redshift drift constraints on f(T) gravity

Abstract

We explore the impact of the Sandage-Loeb (SL) test on the precision of cosmological constraints for $f(T)$ gravity theories. The SL test is an important supplement to current cosmological observations because it measures the redshift drift in the Lyman-$\alpha$ forest in the spectra of distant quasars, covering the "redshift desert" of $2\lesssim z\lesssim 5$. To avoid data inconsistency, we use the best-fit models based on current combined observational data as fiducial models to simulate 30 mock SL test data. We quantify the impact of these SL test data on parameter estimation for $f(T)$ gravity theories. Two typical $f(T)$ models are considered, the power-law model $f(T{)}_{PL}$ and the exponential-form model $f(T{)}_{EXP}$. The results show that the SL test can effectively break the existing strong degeneracy between the present-day matter density ${\Omega }_m$ and the Hubble constant $H_0$ in other cosmological observations. For the considered $f(T)$ models, a 30-year observation of the SL test can improve the constraint precision of ${\Omega }_m$ and $H_0$ enormously but cannot effectively improve the constraint precision of the model parameters.

5 pages, 2 figures

References in corpus (25)

• f(R,T) gravity
• Models of f(R) Cosmic Acceleration that Evade Solar-System Tests
• Disappearing cosmological constant in f(R) gravity
• Dark torsion as the cosmic speed-up
• Einstein's Other Gravity and the Acceleration of the Universe
• Supernova Constraints and Systematic Uncertainties from the First 3 Years of the Supernova Legacy Survey
• Cosmic dynamics in the era of Extremely Large Telescopes
• Constraints on Holographic Dark Energy from Latest Supernovae, Galaxy Clustering, and Cosmic Microwave Background Anisotropy Observations
• Growth factor in f(T) gravity
• Reconstructing holographic quintessence
• Exploring the Dark Energy Redshift Desert with the Sandage-Loeb Test
• Parametrized Post-Friedmann Framework for Interacting Dark Energy
• Exploring the full parameter space for an interacting dark energy model with recent observations including redshift-space distortions: Application of the parametrized post-Friedmann approach
• The time evolution of cosmological redshift as a test of dark energy
• Holographic dark energy in a universe with spatial curvature and massive neutrinos: a full Markov Chain Monte Carlo exploration
• Neutrinos in the holographic dark energy model: constraints from latest measurements of expansion history and growth of structure
• Effects of time-varying $\beta$ in SNLS3 on constraining interacting dark energy models
• Revisiting the holographic dark energy in a non-flat universe: alternative model and cosmological parameter constraints
• Exploring holographic dark energy model with Sandage-Loeb test
• Probing $f(R)$ cosmology with sterile neutrinos via measurements of scale-dependent growth rate of structure
• Measuring growth index in a universe with sterile neutrinos
• Parameter estimation with Sandage-Loeb test
• Quantifying the impact of future Sandage-Loeb test data on dark energy constraints
• Effects of a time-varying color-luminosity parameter $\beta$ on the cosmological constraints of modified gravity models
• Cosmological evolution of quintessence with a sign-changing interaction in dark sector

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• Constraining minimally extended varying speed of light by cosmological chronometers
• Redshift drift of gravitational lensing
• Prospect for cosmological parameter estimation using future Hubble parameter measurements
• Forecast and analysis of the cosmological redshift drift
• Revisit of constraints on dark energy with Hubble parameter measurements including future redshift drift observations
• Testing General Relativity on Galactic Scales via DESI-BAO and Strong Lensing: Circumventing Assumptions on the Hubble Constant, Sound Horizon, and Dark Energy