534 citations · 1.5k across the 33 of their papers we have counts for
13 papers · 1 filter
Interpreting DESI's evidence for evolving dark energy
Marina Cortês, Andrew R Liddle
The latest results on baryon acoustic oscillations from DESI (Dark Energy Spectroscopic Instrument), when combined with cosmic microwave background and supernova data, show indicat…
On dataset tensions and signatures of new cosmological physics
Marina Cortês, Andrew R. Liddle
Can new cosmic physics be uncovered through tensions amongst datasets? Tensions in parameter determinations amongst different types of cosmological observation, especially the `Hub…
Biocosmology: Towards the birth of a new science
Marina Cortês, Stuart A. Kauffman, Andrew R. Liddle +1
Cosmologists wish to explain how our Universe, in all its complexity, could ever have come about. For that, we assess the number of states in our Universe now. This plays the role…
Curvaton scenarios with inflaton decays into curvatons
Christian T Byrnes, Marina Cortês, Andrew R Liddle
We consider the possible decay of the inflaton into curvaton particles during reheating and analyse its effect on curvaton scenarios. Typical decay curvatons are initially relativi…
A separate universe view of the asymmetric sky
Takeshi Kobayashi, Marina Cortês, Andrew R. Liddle
We provide a unified description of the hemispherical asymmetry in the cosmic microwave background generated by the mechanism proposed by Erickcek, Kamionkowski, and Carroll, using…
Tensors, BICEP2, prior dependence, and dust
Marina Cortês, Andrew R. Liddle, David Parkinson
We investigate the prior dependence on the inferred spectrum of primordial tensor perturbations, in light of recent results from BICEP2 and taking into account a possible dust cont…
Comprehensive analysis of the simplest curvaton model
Christian T. Byrnes, Marina Cortês, Andrew R. Liddle
We carry out a comprehensive analysis of the simplest curvaton model, which is based on two non-interacting massive fields. Our analysis encompasses cases where the inflaton and cu…
Cosmic microwave background anomalies in an open universe
Andrew R Liddle, Marina Cortês
We argue that the observed large-scale cosmic microwave anomalies, discovered by WMAP and confirmed by the Planck satellite, are most naturally explained in the context of a margin…
On the prior dependence of constraints on the tensor-to-scalar ratio
Marina Cortês, Andrew R. Liddle, David Parkinson
We investigate the prior dependence of constraints on cosmic tensor perturbations. Commonly imposed is the strong prior of the single-field inflationary consistency equation, relat…
New constraints on the evolution of the stellar-to-dark matter connection: a combined analysis of galaxy-galaxy lensing, clustering, and stellar mass functions from z=0.2 to z=1
Alexie Leauthaud, Jeremy Tinker, Kevin Bundy +20
Using data from the COSMOS survey, we perform the first joint analysis of galaxy-galaxy weak lensing, galaxy spatial clustering, and galaxy number densities. Carefully accounting f…
The Lyman-alpha forest in three dimensions: measurements of large scale flux correlations from BOSS 1st-year data
Anže Slosar, Andreu Font-Ribera, Matthew M. Pieri +34
Using a sample of approximately 14,000 z>2.1 quasars observed in the first year of the Baryon Oscillation Spectroscopic Survey (BOSS), we measure the three-dimensional correlation…
Old Dark Energy
Marina Cortês, Eric V. Linder
Dark energy dynamics in the recent universe is influenced by its evolution through the long, matter dominated expansion history. A particular dynamical property, the flow variable,…
Viable inflationary models ending with a first-order phase transition
Marina Cortês, Andrew R. Liddle
We investigate the parameter space of hybrid inflation models where inflation terminates via a first-order phase transition causing nucleation of bubbles. Such models experience a…