4 citations · 10 across the 6 of their papers we have counts for
9 papers
Limits on the size of electron density fluctuations in the early universe and implications for the Hubble tension
Gabriel P. Lynch, Jens Chluba, Richard Battye +1
Little is known about the early universe on scales smaller than those resolved by the cosmic microwave background (CMB), where electron density fluctuations on kiloparsec to megapa…
Peering Beyond the Veil of Last Scattering: A View of the Universe with CMB Spectral Distortions
Bryce Cyr, Nabila Aghanim, Ethan Baker +37
The frequency spectrum of the cosmic microwave background is the most precise blackbody ever measured in nature, with deviations constrained at the level of almost one part per mil…
Self-field of a moving string
Richard A. Battye, Lukasz P. Bunio, Steven J. Cotterill
We discuss the effectiveness of the recently proposed quantity in suppressing the contribution of a string's self-field to its spectrum, which is used in field theory simul…
Evolution of Cosmic String Loops under Gravitational Backreaction
Lasse Gerblich, Richard A. Battye, E. P. S. Shellard
Nambu-Goto cosmic string loops generically develop cusps, points where the string momentarily reaches the speed of light. These cusps produce strong gravitational wave bursts with…
Kinky vortons in the 2HDM
Richard A. Battye, Steven J. Cotterill, Adam K. Thomasson
We construct and analyse two-dimensional, current-carrying ring solutions, known as kinky vortons, in the -symmetric global two-Higgs-doublet model (2HDM). We demonst…
Ito calculus meets the Hubble tension: Effects of small-scale electron density fluctuations on the CMB anisotropies
Jens Chluba, Geoffrey Vasil, Richard Battye
In this work, we develop a novel formalism to include the effect of electron density fluctuations at ultra small scales (well below the sound horizon at last scattering) on the obs…
Near-Peak Spectrum of Gravitational Waves from Collapsing Domain Walls
Bryce Cyr, Steven Cotterill, Richard Battye
Cosmological domain walls appear in many well-motivated extensions to the standard model of particle physics. If produced, they quickly enter into a self-similar scaling regime, wh…
Cosmological constraints from Sunyaev-Zeldovich cluster counts: an approach to account for missing redshifts
A. Bonaldi, R. A. Battye, M. L. Brown
The accumulation of redshifts provides a significant observational bottleneck when using galaxy cluster surveys to constrain cosmological parameters. We propose a simple method to…
Small-angle anisotropies in the CMBR from active sources
R. A. Battye
We consider the effects of photon diffusion on the small-angle microwave background anisotropies due to active source models. We find that fluctuations created just before the time…