activity
20052026
most citedEarly Dark Energy Can Resolve The Hubble Tension

1k citations · 7.3k across the 60 of their papers we have counts for

collaborators

60 papers

astro-ph.CO2026

Correlated signals of ultralight scalar dark matter in pulsar timing

Joshua W. Foster, Kimberly K. Boddy, Jeff A. Dror +5

Pulsar timing arrays (PTAs) are sensitive to ultralight dark matter (ULDM) in the - mass range, with existing datasets already probing otherwise op…

astro-ph.CO2023★ 30 cited

The weak, the strong and the ugly -- A comparative analysis of interacting stepped dark radiation

Nils Schöneberg, Guillermo Franco Abellán, Théo Simon +3

Models which address both the Hubble and tensions with the same mechanism generically cause a pre-recombination suppression of the small scale matter power spectrum. Here we…

gr-qc2023★ 14 cited

Harmonic analysis for pulsar timing arrays

Jonathan Nay, Kimberly K. Boddy, Tristan L. Smith +1

We investigate the use of harmonic analysis techniques to perform measurements of the angular power spectrum on mock pulsar timing data for an isotropic stochastic gravitational-wa…

astro-ph.CO2023★ 1 cited

A novel integrated Sachs-Wolfe effect from Early Dark Energy

Tristan L. Smith, John T. Giblin, Mustafa A. Amin +4

We study the nonlinear effects of minimally coupled, massless, cosmological scalar fields on the cosmic microwave background (CMB). These fields can exhibit post-recombination para…

astro-ph.CO2023★ 15 cited

The Ups and Downs of Early Dark Energy solutions to the Hubble tension: a review of models, hints and constraints circa 2023

Vivian Poulin, Tristan L. Smith, Tanvi Karwal

We review the current status of Early Dark Energy (EDE) models proposed to resolve the "Hubble tension", the discrepancy between "direct" measurements of the current expansion rate…

astro-ph.CO2022★ 5 cited

Assessing the robustness of sound horizon-free determinations of the Hubble constant

Tristan L. Smith, Vivian Poulin, Théo Simon

The Hubble tension can be addressed by modifying the sound horizon () before recombination, triggering interest in -free early-universe estimates of the Hubble constant,…