Pseudo double-source plane lenses enable statistical strong lensing tomography that forecasts σ(w0) ~ 0.45 from the LSST 10-year photometric sample in flat w0waCDM cosmology.
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Accelerating Universes with Scaling Dark Matter
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abstract
Friedmann-Robertson-Walker universes with a presently large fraction of the energy density stored in an $X$-component with $w_X<-1/3$, are considered. We find all the critical points of the system for constant equations of state in that range. We consider further several background quantities that can distinguish the models with different $w_X$ values. Using a simple toy model with a varying equation of state, we show that even a large variation of $w_X$ at small redshifts is very difficult to observe with $d_L(z)$ measurements up to $z\sim 1$. Therefore, it will require accurate measurements in the range $1<z<2$ and independent accurate knowledge of $\Omega_{m,0}$ (and/or $\Omega_{X,0}$) in order to resolve a variable $w_X$ from a constant $w_X$.
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representative citing papers
A hierarchical Bayesian framework that uses the empirical anti-correlation between AGN variability amplitude and luminosity to infer cosmological parameters from moderate-baseline light curves via importance reweighting.
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Bayesian reconstruction and exhaustive symbolic regression on CMB, BAO, and supernova data yield the one-parameter dark energy parametrization w(a) = w0 / sqrt(a) that fits observations comparably to CPL and better than LambdaCDM.
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DESI DR2 BAO data exhibits 2.3 sigma tension with CMB in Lambda-CDM but prefers evolving dark energy (w0 > -1, wa < 0) at 3.1 sigma with CMB and 2.8-4.2 sigma when including supernovae.
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citing papers explorer
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Strong Lensing Tomography: Double and pseudo multi-source plane strong gravitational lensing to constrain dark energy
Pseudo double-source plane lenses enable statistical strong lensing tomography that forecasts σ(w0) ~ 0.45 from the LSST 10-year photometric sample in flat w0waCDM cosmology.
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The effect of dark energy on the void-halo perpendicular alignments
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Data-Driven Discovery of a Simple Phantom-Crossing Dark Energy Parametrization
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Improved recipes for peculiar velocity power spectra using Evolution Mapping
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Studying spherical collapse and its implications in the Eddington-inspired Born-Infeld gravity theory
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Phenomenology of an Open Effective Field Theory of Dark Energy
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DESI 2024 VI: Cosmological Constraints from the Measurements of Baryon Acoustic Oscillations
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Impact and measurability of linear relativistic effects in galaxy surveys
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Alleviating prior dependencies for DESI DR1 clustering fits through reparameterization
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From Evidence to Evident: Decisive Cosmological Evidence for the Normal Neutrino Mass Hierarchy
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DESI 2024 V: Full-Shape Galaxy Clustering from Galaxies and Quasars
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Bounding the Effect of HOD Assumptions on Small-Scale Clustering Constraints
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Probing the sensitivity of dark energy dynamics to equation of state parametrization flexibility
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