163 citations · 790 across the 15 of their papers we have counts for
15 papers
Relativistic Cosmological Simulations in Gravity I: Methodology
Lorenzo Reverberi, David Daverio
We present the new relativistic cosmological particle-mesh code , based on , aimed at simulating non-linear structure formation in …
General Relativistic Cosmological N-body Simulations I: time integration
David Daverio, Yves Dirian, Ermis Mitsou
This is the first in a series of papers devoted to fully general-relativistic -body simulations applied to late-time cosmology. The purpose of this paper is to present the combi…
Type I Abelian Higgs strings: evolution and Cosmic Microwave Background constraints
Mark Hindmarsh, Joanes Lizarraga, Jon Urrestilla +2
We present results from the first simulations of networks of Type I Abelian Higgs cosmic strings to include both matter and radiation eras and Cosmic Microwave Background (CMB) con…
Apples with Apples comparison of 3+1 conformal numerical relativity schemes
David Daverio, Yves Dirian, Ermis Mitsou
This paper contains a comprehensive comparison catalog of `Apples with Apples' tests for the BSSNOK, CCZ4 and Z4c numerical relativity schemes, with and without constraint damping…
Safely smoothing spacetime: backreaction in relativistic cosmological simulations
Julian Adamek, Chris Clarkson, David Daverio +2
A persistent theme in the study of dark energy is the question of whether it really exists or not. It is often claimed hat we are mis-calculating the cosmological model by neglecti…
Scaling from gauge and scalar radiation in Abelian Higgs string networks
Mark Hindmarsh, Joanes Lizarraga, Jon Urrestilla +2
We investigate cosmic string networks in the Abelian Higgs model using data from a campaign of large-scale numerical simulations on lattices of up to grid points. We obser…
A numerical relativity scheme for cosmological simulations
David Daverio, Yves Dirian, Ermis Mitsou
Cosmological simulations involving the fully covariant gravitational dynamics may prove relevant in understanding relativistic/non-linear features and, therefore, in taking better…
gevolution: a cosmological N-body code based on General Relativity
Julian Adamek, David Daverio, Ruth Durrer +1
We present a new N-body code, gevolution, for the evolution of large scale structure in the Universe. Our code is based on a weak field expansion of General Relativity and calculat…
Energy-momentum correlations for Abelian Higgs cosmic strings
David Daverio, Mark Hindmarsh, Martin Kunz +2
We report on the energy-momentum correlators obtained with recent numerical simulations of the Abelian Higgs model, essential for the computation of cosmic microwave background and…
General relativity and cosmic structure formation
Julian Adamek, David Daverio, Ruth Durrer +1
Numerical simulations are a versatile tool providing insight into the complicated process of structure formation in cosmology. This process is mainly governed by gravity, which is…
Latfield2: A c++ library for classical lattice field theory
David Daverio, Mark Hindmarsh, Neil Bevis
latfield2 is a C++ library designed to simplify writing parallel codes for solving partial differen- tial equations, developed for application to classical field theories in partic…
Fitting BICEP2 with defects, primordial gravitational waves and dust
Joanes Lizarraga, Jon Urrestilla, David Daverio +3
In this work we discuss the possibility of cosmic defects being responsible for the B-mode signal measured by the BICEP2 collaboration. We also allow for the presence of other cosm…
Constraining topological defects with temperature and polarization anisotropies
Joanes Lizarraga, Jon Urrestilla, David Daverio +3
We analyse the possible contribution of topological defects to cosmic microwave anisotropies, both temperature and polarisation. We allow for the presence of both inflationary scal…
Can topological defects mimic the BICEP2 B-mode signal?
Joanes Lizarraga, Jon Urrestilla, David Daverio +3
We show that the B-mode polarization signal detected at low multipoles by BICEP2 cannot be entirely due to topological defects. This would be incompatible with the high-multipole B…
General Relativistic N-body simulations in the weak field limit
Julian Adamek, David Daverio, Ruth Durrer +1
We develop a formalism for General Relativistic N-body simulations in the weak field regime, suitable for cosmological applications. The problem is kept tractable by retaining the…