Author

P. LeFloch

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Preprint Oct 2026

The General-Relativistic Limit of f(R) Gravity

We establish the general-relativistic limit of f(R) gravity coupled to a massless scalar field for small, asymptotically Euclidean, well-prepared Cauchy data near Minkowski spacetime. We prove global existence and future causal geodesic completeness, with uniform estimates for the metric, matter, and rescaled effective...

P. LeFloch, Yue Ma · 0 citations

Preprint Oct 2026

A nonlinear rod linkage model: zero-energy chains and continuum consistency

We study a discrete Lagrangian model for a one-dimensional chain of rigid rods coupled by elastic springs. We characterize the geometry of its zero-energy constraint and distinguish the spinner and flipper regimes. Under graph-type hypotheses, selected zero-energy chains converge, after rescaling, to trajectories of an...

D. Kriventsov, P. LeFloch · 0 citations