437 citations · 6k across the 146 of their papers we have counts for
152 papers
Is DESI Seeing Dynamical Dark Energy, or a Cosmic Glitch in Gravity?
Robin Y. Wen, Lukas Tobias Hergt, Niayesh Afshordi +1
Combined baryon acoustic oscillation and cosmic microwave background data have begun to mildly favor departures from . This is usually framed as 2-parameter dynamica…
Current and Future Constraints on the Primordial Power Spectrum
Zachary Cheslog, Emily Finson, Amanda MacInnis +4
The primordial scalar power spectrum provides a powerful window onto early-universe physics, including a broad class of inflationary scenarios. These models often predict a charact…
A Cuscuton Representation of the Loop Quantum Cosmology Bounce
Niayesh Afshordi, Kristina Giesel
Loop Quantum Cosmology (LQC) replaces the big bang singularity of the homogeneous universe by a bounce, usually described by the modified Friedmann equation $H^2=ρ(1-ρ/ρ_c)/(3M_p^2…
Gauss--Bonnet running and the de Sitter saddle of quadratic gravity inflation
Ruolin Liu, Niayesh Afshordi
Inflation driven purely by the quantum running of the curvature-squared couplings of quadratic gravity was shown to accommodate the high scalar tilt favored by recent cosmic microw…
Thermal Sunyaev-Zel'dovich cross-correlations with unWISE galaxies: disentangling radio contamination, dust properties, and electron pressure
Guandi Zhao, Alex Krolewski, Niayesh Afshordi
Cross-correlations between the thermal Sunyaev-Zel'dovich (tSZ) effect and galaxy surveys provide a sensitive probe of hot gas in low-mass halos, but on the angular scales of great…
Big Mysteries Survey: Physicists' Views on Cosmology, Black Holes, Quantum Mechanics, and Quantum Gravity
Niayesh Afshordi, Phil Halper, Matteo Rini +1
We present results from the Big Mysteries Survey, a large-scale survey conducted through the American Physical Society's Physics Magazine on foundational and controversial topics i…