4 papers
Pushing the Primordial Frontier: Cosmological Collider Signatures at Strong Mixing
Javier Huenupi, Claudio Muñoz, Gonzalo A. Palma +1
We develop an analytic treatment of primordial non-Gaussianity in multifield inflation that is nonperturbative in the constant curvature--isocurvature mixing strength . Using ex…
Pushing the Primordial Frontier: Exact Linear Solutions in Multifield Inflation
Javier Huenupi, Claudio Muñoz, Gonzalo A. Palma +1
We present exact analytic solutions for the linear dynamics of a two-field inflationary system in which the primordial curvature perturbation is coupled to an isocurvature pert…
A note on loop resummation in de Sitter spacetime with the wavefunction of the universe approach
Javier Huenupi, Ellie Hughes, Gonzalo A. Palma +1
We analyze the computation of -point correlation functions in de Sitter spacetime, including loop corrections, using the wavefunction of the universe approach. This method consi…
Regularizing infrared divergences in de Sitter spacetime: Loops, dimensional regularization, and cutoffs
Javier Huenupi, Ellie Hughes, Gonzalo A. Palma +1
Correlation functions of light scalar fields in de Sitter spacetime, computed via standard perturbation theory, often exhibit secular growth characterized by time-dependent diverge…