Probing Quintessence using BAO imprint on the cross-correlation of weak lensing and post-reionization HI 21 cm signal

Abstract

In this work we investigate the possibility of constraining a thawing Quintessence scalar field model for dark energy. We propose using the imprint of baryon acoustic oscillation (BAO) on the cross-correlation of post-reionization 21-cm signal and galaxy weak lensing convergence field to tomographically measure the angular diameter distance $D_A(z)$ and the Hubble parameter $H(z)$. The projected errors in these quantities are then used to constrain the Quintessence model parameters. We find that independent $600$hrs radio interferometric observation at four observing frequencies $916$MHz, $650$ MHz, $520$ MHz and $430$MHz with a SKA-1-Mid like radio telescope in cross-correlation with a deep weak lensing survey covering half the sky may measure the binned $D_A$ and $H$ at a few percent level of sensitivity. The Monte Carlo analysis for a power law thawing Quintessence model gives the $1-\sigma$ marginalized bounds on the initial slope ${\lambda }_i$,dark energy density parameter ${\Omega }_{\varphi 0}$ and the shape of the potential $\Gamma$ at 8.63%, 10.08% and 9.75% respectively. The constraints improve to 7.66%, 4.39% and 5.86% respectively when a joint analysis with SN and other probes is performed.

10 Pages, 7 figures

References in corpus (21)

• Dynamics of dark energy
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
• Models of f(R) Cosmic Acceleration that Evade Solar-System Tests
• Disappearing cosmological constant in f(R) gravity
• Measuring the Baryon Acoustic Oscillation scale using the SDSS and 2dFGRS
• Baryon Acoustic Oscillation Intensity Mapping as a Test of Dark Energy
• How accurately can 21 cm tomography constrain cosmology?
• Thawing quintessence with a nearly flat potential
• Possibility of Precise Measurement of the Cosmological Power Spectrum With a Dedicated 21cm Survey After Reionization
• On using visibility correlations to probe the HI distribution from the dark ages to the present epoch I: Formalism and the expected signal
• Axions as Quintessence in String Theory
• The multi-frequency angular power spectrum of the epoch of reionization 21 cm signal
• Modeling the neutral hydrogen distribution in the post-reionization Universe: intensity mapping
• Theoretical and observational constraints on the HI intensity power spectrum
• Estimation of Cosmological Parameters from HI Observations of Post-reionization Epoch
• Cosmological constraints from 21cm surveys after reionization
• Probing the primordial Universe with MeerKAT and DES
• Lenses in the forest: cross-correlation of the Lyman-alpha flux with CMB lensing
• Gravitational Lensing by Large Scale Structures: A Review
• The CMBR ISW and HI 21-cm Cross-correlation Angular Power Spectrum