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CMB bounds on tensor-scalar-scalar inflationary correlations
Maresuke Shiraishi, Michele Liguori, James R. Fergusson
The nonlinear interaction between one graviton and two scalars is enhanced in specific inflationary models, potentially leading to distinguishable signatures in the bispectrum of t…
Detecting higher spin fields through statistical anisotropy in the CMB and galaxy power spectra
Nicola Bartolo, Alex Kehagias, Michele Liguori +3
Primordial inflation may represent the most powerful collider to test high-energy physics models. In this paper we study the impact on the inflationary power spectrum of the comovi…
Primordial non-Gaussianity with -type and -type spectral distortions: exploiting Cosmic Microwave Background polarization and dealing with secondary sources
Andrea Ravenni, Michele Liguori, Nicola Bartolo +1
Cross-correlations between Cosmic Microwave Background (CMB) temperature and -spectral distortions anisotropies have been previously proposed as a way to measure the local bispe…
Finding the chiral gravitational wave background of an axion-SU(2) inflationary model using CMB observations and laser interferometers
Ben Thorne, Tomohiro Fujita, Masashi Hazumi +3
A detection of B-mode polarization of the Cosmic Microwave Background (CMB) anisotropies would confirm the presence of a primordial gravitational wave background (GWB). In the infl…
Limits on statistical anisotropy from BOSS DR12 galaxies using bipolar spherical harmonics
Naonori S. Sugiyama, Maresuke Shiraishi, Teppei Okumura
We measure statistically anisotropic signatures imprinted in three-dimensional galaxy clustering using bipolar spherical harmonics (BipoSHs) in both Fourier space and configuration…
CMB Scale Dependent Non-Gaussianity from Massive Gravity during Inflation
Guillem Domènech, Takashi Hiramatsu, Chunshan Lin +3
We consider a cosmological model in which the tensor mode becomes massive during inflation, and study the Cosmic Microwave Background (CMB) temperature and polarization bispectra a…