par Anciaux, Henri ;Cipriani, Nastassja
Référence Journal of geometry and physics, 88, page (105-112)
Publication Publié, 2015-02
Article révisé par les pairs
Résumé : We give a local characterization of codimension two submanifolds which are marginally trapped in Robertson-Walker spaces, in terms of an algebraic equation to be satisfied by the height function. We prove the existence of a large number of local solutions. We refine the description in the case of curves with lightlike acceleration in three-dimensional spaces Robertson-Walker spaces, and in the case of codimension two submanifolds whose second fundamental form is lightlike.