497 citations · 5.6k across the 71 of their papers we have counts for
73 papers
Dark sector interactions in the limit: velocity locking in pure momentum exchange models
Nathan Cruickshank, Robert Crittenden, Kazuya Koyama +1
Models of interacting dark energy (DE) and dark matter (DM) involving pure momentum exchange are a promising avenue for resolving cosmological tensions. However, the behaviour of t…
Forecasts for interacting dark energy with time-dependent momentum exchange
Nathan Cruickshank, Robert Crittenden, Kazuya Koyama +1
Models of interacting dark energy and dark matter offer a possible solution to cosmological tensions. In this work, we examine a pure momentum-exchange model with a time-dependent…
Cosmological constraints on early dark energy from the full shape analysis of eBOSS DR16
Rafaela Gsponer, Ruiyang Zhao, Jamie Donald-McCann +5
We evaluate the effectiveness of Early Dark Energy (EDE) in addressing the Hubble tension using data from the completed eBOSS survey, focusing on luminous red galaxies (LRGs), quas…
A multitracer analysis for the eBOSS galaxy sample based on the effective field theory of large-scale structure
Ruiyang Zhao, Xiaoyong Mu, Rafaela Gsponer +8
We perform a multitracer full-shape analysis in Fourier space based on the effective field theory of large-scale structure (EFTofLSS) using the complete Sloan Digital Sky Survey IV…
Momentum transfer models of interacting dark energy
Mark S. Linton, Robert Crittenden, Alkistis Pourtsidou
We consider two models of interacting dark energy, both of which interact only through momentum exchange. One is a phenomenological one-parameter extension to CDM, and the other…
Testing the equivalence principle on cosmological scales using the odd multipoles of galaxy cross-power spectrum and bispectrum
Obinna Umeh, Kazuya Koyama, Robert Crittenden
One of the cornerstones of general relativity is the equivalence principle. However, the validity of the equivalence principle has only been established on solar system scales for…