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2020

Constraining the inflationary potential with spectral distortions

Schöneberg, Nils, Lucca, Matteo, Hooper, Deanna C.

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Measuring spectral distortions (SDs) of the cosmic microwave background (CMB) will provide new constraints on previously unexplored scales of the primordial power spectrum, allowing us to extend the probed parameter space by several orders of magnitude in $k$-space, which could have significant implications in the context of primordial black holes and gravitational waves, among others.

Here we discuss how various models of inflation can be tightly constrained by the combination of current and future CMB SD and anisotropy experiments.
In particular, we investigate the constraining power of SD experiments such as FIRAS, PIXIE, and PRISM in conjunction with CMB anisotropy probes such as Planck or CMB-S4 plus LiteBIRD.
Building on the latest version of the Boltzmann solver CLASS (v3.0), here we also consistently marginalize over the possible galactic and extra-galactic foregrounds for the SD missions.

Constraining the inflationary potential with spectral distortions · Around

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