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Primordial trispectra and CMB spectral distortions
Nicola Bartolo, Michele Liguori, Maresuke Shiraishi
We study the bispectrum, generated by correlations between Cosmic Microwave Background temperature (T) anisotropies and chemical potential () distortions, and we analyze i…
Scale-dependent gravitational waves from a rolling axion
Ryo Namba, Marco Peloso, Maresuke Shiraishi +2
We consider a model in which a pseudo-scalar field rolls for some e-folds during inflation, sourcing one helicity of a gauge field. These fields are only gravitationally couple…
Future Constraints on Angle-Dependent Non-Gaussianity from Large Radio Surveys
Alvise Raccanelli, Maresuke Shiraishi, Nicola Bartolo +5
We investigate how well future large-scale radio surveys could measure different shapes of primordial non-Gaussianity; in particular we focus on angle-dependent non-Gaussianity ari…
Antisymmetric galaxy cross-correlations as a cosmological probe
Liang Dai, Marc Kamionkowski, Ely D. Kovetz +2
The auto-correlation between two members of a galaxy population is symmetric under the interchange of the two galaxies being correlated. The cross-correlation between two different…
Measuring primordial anisotropic correlators with CMB spectral distortions
Maresuke Shiraishi, Michele Liguori, Nicola Bartolo +1
We show that inflationary models with broken rotational invariance generate testable off-diagonal signatures in the correlation between the -type distortion and temperature fluc…
Parity-violating CMB correlators with non-decaying statistical anisotropy
Nicola Bartolo, Sabino Matarrese, Marco Peloso +1
We examine the cosmological correlators induced by the simultaneous breaking of parity and of statistical isotropy, e.g., in presence of the coupling ${\cal L} = f(ϕ) ( - \frac{1}{…