Florian Beyer

collaborators

2 papers

gr-qc2026

Big bang stability and isotropisation for the Einstein-scalar field equations in the ekpyrotic regime

Florian Beyer, David Garfinkle, James Isenberg +1

It has been shown that, in spacetime dimensions $n \geq 3$ , that the Kasner-scalar field solutions to the Einstein-scalar fields equations with potential $V_{0} e^{- s I ¨ }$ , where $s<s…

gr-qc2024

Past instability of FLRW solutions of the Einstein-Euler-scalar field equations for linear equations of state $p = K I ¨ $ with $0 \leq K < 1/3$

Florian Beyer, Elliot Marshall, Todd A. Oliynyk

Using numerical methods, we examine, under a Gowdy symmetry assumption, the dynamics of nonlinearly perturbed FLRW fluid solutions of the Einstein-Euler-scalar field equations in t…

Big bang stability and isotropisation for the Einstein-scalar field equations in the ekpyrotic regime

Past instability of FLRW solutions of the Einstein-Euler-scalar field equations for linear equations of state p=KI¨ with 0≤K<1/3

Past instability of FLRW solutions of the Einstein-Euler-scalar field equations for linear equations of state $p = K I ¨ $ with $0 \leq K < 1/3$