305 citations · 2.5k across the 92 of their papers we have counts for
14 papers · 1 filter
Reanalyzing DESI DR1: 3. Constraints on Inflation from Galaxy Power Spectra & Bispectra
Anton Chudaykin, Mikhail M. Ivanov, Oliver H. E. Philcox
Models of cosmic inflation generically predict a weak but potentially detectable amount of primordial non-Gaussianity (PNG), which can be used to obtain insights into the degrees o…
Separating the Inseparable: Constraining Arbitrary Primordial Bispectra with Cosmic Microwave Background Data
Oliver H. E. Philcox, Kunhao Zhong, Salvatore Samuele Sirletti
To efficiently probe primordial non-Gaussianity using Cosmic Microwave Background (CMB) data, we require theoretical predictions that are factorizable, \textit{i.e.}\ those whose k…
Reanalyzing DESI DR1: 2. Constraints on Dark Energy, Spatial Curvature, and Neutrino Masses
Anton Chudaykin, Mikhail M. Ivanov, Oliver H. E. Philcox
We carry out an independent re-analysis of the Dark Energy Spectroscopic Instrument (DESI) public dataset, focusing on extensions to the standard cosmological model, CDM. Utiliz…
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…
Quantum stress-energy at timelike boundaries: testing a new beyond-CDM parameter with cosmological data
Oliver H. E. Philcox, Eva Silverstein, Gonzalo Torroba
We analyze the basic cosmological effects of a population of timelike boundaries -- a form of nontrivial spacetime topology -- containing a boundary layer of quantum stress energy.…
One-Loop Galaxy Bispectrum: Consistent Theory, Efficient Analysis with COBRA, and Implications for Cosmological Parameters
Thomas Bakx, Mikhail M. Ivanov, Oliver H. E. Philcox +1
We present an efficient and accurate pipeline for the analysis of the redshift-space galaxy bispectrum multipoles at one-loop order in effective field theory (EFT). We provide a sy…