Publication
Classical big-bounce cosmology: dynamical analysis of a homogeneous and irrotational Weyssenhoff fluid
Publications associées (38)
Euclid preparation XXXVI. Modelling the weak lensing angular power spectrum
Frédéric Courbin, Georges Meylan, Gianluca Castignani, Austin Chandler Peel, Maurizio Martinelli, Yi Wang, Richard Massey, Fabio Finelli, Marcello Farina
This work considers which higher order modeling e ffects on the cosmic shear angular power spectra must be taken into account for Euclid. We identified the relevant terms and quantified their individual and cumulative impact on the cosmological parameter i ...
Edp Sciences S A2024CosmoLattice: A modern code for lattice simulations of scalar and gauge field dynamics in an expanding universe
Daniel Garcia Figueroa, Adrien Florio, Wessel Valkenburg, Francisco Torrenti
This paper describes CosmoGattice, a modern package for lattice simulations of the dynamics of interacting scalar and gauge fields in an expanding universe. CosmoGattice incorporates a series of features that makes it very versatile and powerful: i) it is ...
ELSEVIER2023Cosmic void exclusion models and their impact on the distance scale measurements from large-scale structure
Jean-Paul Richard Kneib, Andrei Variu, Daniel Felipe Forero Sanchez, Cheng Zhao, Amélie Tamone
Baryonic Acoustic Oscillations (BAOs) studies based on the clustering of voids and matter tracers provide important constraints on cosmological parameters related to the expansion of the Universe. However, modelling the void exclusion effect is an importan ...
OXFORD UNIV PRESS2023Beyond - ?CDM constraints from the full shape clustering measurements from BOSS and eBOSS
We analyse the full shape of anisotropic clustering measurements from the extended Baryon Oscillation Spectroscopic Survey quasar sample together with the combined galaxy sample from the Baryon Oscillation Spectroscopic Survey. We obtain constraints on the ...
OXFORD UNIV PRESS2023Cosmology with Large Scale Structures using Massive Spectroscopic Surveys
Spectroscopic surveys aim to map large fractions of the Universe to study the Large Scale Structures (LSS). LSS evolution traces the distribution of matter as a result of the tension between the expansion of the Universe and the gravitational forces, which ...
EPFL2022Coupling metric-affine gravity to a Higgs-like scalar field
General relativity (GR) exists in different formulations. They are equivalent in pure gravity but generically lead to distinct predictions once matter is included. After a brief overview of various versions of GR, we focus on metric-affine gravity, which a ...
AMER PHYSICAL SOC2022Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Cosmological implications from two decades of spectroscopic surveys at the Apache Point Observatory
Jean-Paul Richard Kneib, Zheng Zheng, Andrei Variu, Cheng Zhao, Johan Comparat, Anand Stéphane Raichoor, Yuting Wang, Amélie Tamone
We present the cosmological implications from final measurements of clustering using galaxies, quasars, and Ly alpha forests from the completed Sloan Digital Sky Survey (SDSS) lineage of experiments in large-scale structure. These experiments, composed of ...
AMER PHYSICAL SOC2021Testing general relativity on cosmological scales at redshift z similar to 1.5 with quasar and CMB lensing
We test general relativity (GR) at the effective redshift (z) over tilde similar to 1.5 by estimating the statistic E-G, a probe of gravity, on cosmological scales 19 - 190 h(-1)Mpc. This is the highest redshift and largest scale estimation of E-G so far. ...
OXFORD UNIV PRESS2021An analytical toolkit for the S-matrix bootstrap
Alexander Zhiboedov, Miguel Alexandre Ribeiro Correia, Amit Sever
We revisit analytical methods for constraining the nonperturbative S-matrix of unitary, relativistic, gapped theories in d >= 3 spacetime dimensions. We assume extended analyticity of the two-to-two scattering amplitude and use it together with elastic uni ...
SPRINGER2021Euclid preparation: VII. Forecast validation for Euclid cosmological probes
Georges Meylan, Jean-Luc Starck, Maurizio Martinelli, Slobodan Ilic, Yi Wang, Richard Massey
Aims. The Euclid space telescope will measure the shapes and redshifts of galaxies to reconstruct the expansion history of the Universe and the growth of cosmic structures. The estimation of the expected performance of the experiment, in terms of predicted ...
EDP SCIENCES S A2020