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arXiv · 2603.02027

Ricci curvature and metric in causal spacetimes

Javier Lafuente-López
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Abstract

A viable spacetime is one that admits a complete timelike geodesic. It is shown that a causal diffeomorphism preserving the Ricci tensor between two spacetimes is necessarily a homothety, if one of them is viable.

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Javier Lafuente-López. 2026-03-02. Ricci curvature and metric in causal spacetimes. https://arxiv.org/abs/2603.02027

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