539 citations · 5.6k across the 116 of their papers we have counts for
3 papers · 2 filters
Beyond relativistic Lagrangian perturbation theory. I. An exact-solution controlled model for structure formation
Ismael Delgado Gaspar, Thomas Buchert, Jan J. Ostrowski
We develop a new nonlinear method to model structure formation in general relativity from a generalization of the relativistic Lagrangian perturbation schemes, controlled by Szeker…
On general-relativistic Lagrangian perturbation theory and its non-perturbative generalization
Thomas Buchert, Ismael Delgado Gaspar, Jan J. Ostrowski
The Newtonian Lagrangian perturbation theory is a widely used framework to study structure formation in cosmology in the nonlinear regime. We review a general-relativistic formulat…
The averaging problem on the past null cone in inhomogeneous dust cosmologies
Thomas Buchert, Henk van Elst, Asta Heinesen
Cosmological models typically neglect the complicated nature of the spacetime manifold at small scales in order to hypothesize idealized general relativistic solutions for describi…