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Tensor Spectra Templates for Axion-Gauge Fields Dynamics during Inflation
Tomohiro Fujita, Evangelos I. Sfakianakis, Maresuke Shiraishi
gauge fields can generate large gravitational waves during inflation, if they are coupled to an axion which can be either the inflaton or a spectator field. The shape of th…
Measuring chiral gravitational waves in Chern-Simons gravity with CMB bispectra
Nicola Bartolo, Giorgio Orlando, Maresuke Shiraishi
Chern-Simons gravity coupled to the scalar sector through a generic coupling function can be tested at the very high energies of the inflationary period. In 1706.04627, we c…
Planck 2018 results. X. Constraints on inflation
Planck Collaboration, Y. Akrami, F. Arroja +173
We report on the implications for cosmic inflation of the 2018 Release of the Planck CMB anisotropy measurements. The results are fully consistent with the two previous Planck cosm…
Planck 2018 results. I. Overview and the cosmological legacy of Planck
Planck Collaboration, Y. Akrami, F. Arroja +188
The European Space Agency's Planck satellite, which was dedicated to studying the early Universe and its subsequent evolution, was launched on 14 May 2009. It scanned the microwave…
Detecting higher spin fields through statistical anisotropy in the CMB bispectrum
Gabriele Franciolini, Alex Kehagias, Antonio Riotto +1
Inflation may provide a suitable collider to probe physics at very high energies. In this paper we investigate the impact on the CMB bispectrum of higher spin fields which are long…