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Resummed propagators in multi-component cosmic fluids with the eikonal approximation
Francis Bernardeau, Nicolas Van de Rijt, Filippo Vernizzi
We introduce the eikonal approximation to study the effect of the large-scale motion of cosmic fluids on their small-scale evolution. This approach consists in collecting the impac…
The CMB bispectrum in the squeezed limit
Paolo Creminelli, Cyril Pitrou, Filippo Vernizzi
The CMB bispectrum generated by second-order effects at recombination can be calculated analytically when one of the three modes has a wavelength much longer than the other two and…
Cosmological structure formation with clustering quintessence
Emiliano Sefusatti, Filippo Vernizzi
We study large-scale structure formation in the presence of a quintessence component with zero speed of sound in the framework of Eulerian Perturbation Theory. Due to the absence o…