From the 1 of 2 linked papers with an AI index.
2 papers
astro-ph.CO2026
A Periodically Interacting Dark Sector: Signatures and Constraints from CMB and Cosmic Expansion Data
Marco Antonio Cardoso Alvarez, Micol Benetti, Leila Graef +1
The paper proposes a cosmological model where the interaction between dark matter and dark energy oscillates in sign over time, representing the back‑reaction of super‑Hubble fluct…
astro-ph.CO2025
Back-Reaction of Super-Hubble Fluctuations, Late Time Tracking and Recent Observational Results
Marco Antonio Cardoso Alvarez, Leila Graef, Robert Brandenberger
Previous studies suggested that the back-reaction of super-Hubble cosmological fluctuations could lead to a dynamical relaxation of the cosmological constant. Moreover, this mechan…