3 papers
astro-ph.CO2026
Constraining Inflationary Particle Production with CMB Polarization
Luca H. Abu El-Haj, Oliver H. E. Philcox, J. Colin Hill
Following Philcox et al. (2025), we investigate a scenario with a massive partner to the inflaton ( times the inflationary Hubble scale), in which particles are produced du…
astro-ph.CO2025
The ISW-Lensing Bispectrum & Trispectrum
Oliver H. E. Philcox, J. Colin Hill
Due to the integrated Sachs-Wolfe (ISW) effect, cosmic microwave background (CMB) temperature and polarization fluctuations are correlated with the gravitational lensing potential.…
astro-ph.CO2025
Too Hot to Handle: Searching for Inflationary Particle Production in Planck Data
Oliver H. E. Philcox, Soubhik Kumar, J. Colin Hill
Non-adiabatic production of massive particles is a generic feature of many inflationary mechanisms. If sufficiently massive, these particles can leave features in the cosmic microw…