2025/06/27 by Rodrigues, G., Santos, F. B. M. dos, da Costa, S. Santos +5
#Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences
paper · doi:10.48550/arxiv.2506.22384
We investigate the constraining power of future CMB and galaxy surveys on models of quintessential inflation realized within the framework of α-attractors. We analyze how these future datasets will probe the parameter space of α-attractor quintessential inflation, specifically the inflationary potential parameters. Our results demonstrate that the synergy between CMB-S4, LiteBIRD, and Euclid can significantly tighten the bounds on the model parameters, achieving forecasted 1σ uncertainties of α=2± 0.17, ns=0.965± 0.0014, ln(1010As)=3.0447± 0.0029 for the CMB+GCsp case. This level of sensitivity will enable us to discriminate between different realizations of quintessential inflation and test the attractor behavior characteristic of these models.