https://neckpinch.com/authors/marie-amelie-lawn/New arXiv papers by Marie-Amélie Lawn, from Neckpinch Tue, 03 Nov 2026 08:41:12 GMT https://neckpinch.com/papers/2211.14529/arxiv:2211.14529Sat, 26 Nov 2022 00:00:00 GMTDiego Artacho, Marie-Amélie Lawn, Miguel Ortega — Translators can be regarded as submanifolds which satisfy the mean curvature flow equation when evolving by translations along a distinguished vector field of the ambient space. We study translators in Generalised Robertson-Walker spacetimes, due to their importance as Lorentzian manifolds, and because they admit a natural conformal Killing timelike vector field carrying substantial geometric information, which will play the role of this translating vector field. We identify three one-parameter families of warping functions for which these objects exist. As a first example of this notion of translator, we classify the analogues of the classical Grim Reapers within this context.Mean curvature flowSelf-shrinkers & translatorsPhysics