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Gravitational Wave Emission from a Cosmic String Loop, I: Global Case
Jorge Baeza-Ballesteros, Edmund J. Copeland, Daniel G. Figueroa +1
We study the simultaneous decay of global string loops into scalar particles (massless and massive modes) and gravitational waves (GWs). Using field theory simulations in flat spac…
Primordial black holes and stochastic inflation beyond slow roll: I -- noise matrix elements
Swagat S. Mishra, Edmund J. Copeland, Anne M. Green
Primordial Black Holes (PBHs) may form in the early Universe, from the gravitational collapse of large density perturbations, generated by large quantum fluctuations during inflati…
CMB constraints on monodromy inflation at strong coupling
Edmund J. Copeland, Francesc Cunillera, Adam Moss +1
We carry out a thorough numerical examination of field theory monodromy inflation at strong coupling. We perform an MCMC analysis using a Gaussian likelihood, fitting multiparamete…
A model-independent reconstruction of dark energy to very high redshift
Adam Moss, Edmund Copeland, Steven Bamford +1
We provide a model-independent reconstruction of dark energy from to . We parameterise the model by a perfect fluid with a series of physically well-motivated…
Effect of high harmonic loops on gravitational wave bounds from cosmic strings
Despoina Pazouli, Konstantinos Palapanidis, Anastasios Avgoustidis +1
Based on a binary tree model for the self intersection of cosmic string loops containing high harmonics we estimate the number of self-intersections of the parent and daughter loop…
Dark energy loopholes some time after GW170817
Lorenzo Bordin, Edmund J. Copeland, Antonio Padilla
We revisit the constraints on scalar tensor theories of modified gravity following the purge of GW170817. We pay particular attention to dynamical loopholes where the anomalous spe…