Romain Codur
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Kinetic theory of particle-in-cell simulation plasma and the ensemble averaging technique Open
We derive the kinetic theory of fluctuations in physically and numerically stable particle-in-cell (PIC) simulations of electrostatic plasmas. The starting point is the single-time correlation at the start of the simulation between the sta…
Conséquences des inhomogénéités à symétrie sphérique sur le redshift et les distances en cosmologie Open
Cosmology is the science that seeks to understand the deep workings of the universe by studying the structure of space-time on the largest imaginable scales. This challenge is made possible by the Einstein field equations, which provide a …
Redshift drift in radially inhomogeneous Lemaître-Tolman-Bondi spacetimes Open
We provide a formula for estimating the redshift and its secular change (redshift drift) in Lemaître-Tolman-Bondi (LTB) spherically symmetric universes. We compute the scaling of the redshift drift for LTB models that predict Hubble diagra…