136 citations · 197 across the 2 of their papers we have counts for
4 papers
A weak lensing view on primordial non-Gaussianities
Bjoern Malte Schaefer, Alessandra Grassi, Mischa Gerstenlauer +1
We investigate the signature of primordial non-Gaussianities in the weak lensing bispectrum, in particular the signals generated by local, orthogonal and equilateral non-Gaussianit…
Inflationary Correlation Functions without Infrared Divergences
Mischa Gerstenlauer, Arthur Hebecker, Gianmassimo Tasinato
Inflationary correlation functions are potentially affected by infrared divergences. For example, the two-point correlator of curvature perturbation at momentum k receives correcti…
Scale-dependent non-Gaussianity probes inflationary physics
Christian T. Byrnes, Mischa Gerstenlauer, Sami Nurmi +2
We calculate the scale dependence of the bispectrum and trispectrum in (quasi) local models of non-Gaussian primordial density perturbations, and characterize this scale dependence…
Inflationary Infrared Divergences: Geometry of the Reheating Surface vs. delta N Formalism
Christian T. Byrnes, Mischa Gerstenlauer, Arthur Hebecker +2
We describe a simple way of incorporating fluctuations of the Hubble scale during the horizon exit of scalar perturbations into the delta N formalism. The dominant effect comes fro…