3 papers
gr-qc2026
When inflationary perturbations refuse to classicalise: the role of non-Gaussianity in Wigner negativity
Aurora Ireland, Vincent Vennin
Inflationary perturbations are quantum in origin. Yet, when computing cosmological observables, they are often treated as classical stochastic fields. Do they nevertheless retain q…
astro-ph.CO2025
The Noisy Universe
Gabriela Barenboim, Aurora Ireland, Albert Stebbins
We present observational constraints on large-scale white noise (LSWN) in the cosmic density field, a phenomenon predicted to arise from non-linear mode coupling during cosmologica…
astro-ph.CO2025
Large Scale White Noise and Cosmology
Gabriela Barenboim, Aurora Ireland, Albert Stebbins
The generation of white noise on large scales is a generic property of the dynamics of physical systems described by local non-linear partial differential equations. Non-linearitie…