5 citations · 15 across the 12 of their papers we have counts for
4 papers · 1 filter
Marginally outer trapped tubes in de Sitter spacetime
Marc Mars, Walter Simon, Roland Steinbauer +1
We prove two results which are relevant for constructing marginally outer trapped tubes (MOTTs) in de Sitter spacetime. The first one holds more generally, namely for spacetimes sa…
Transverse expansion of the metric at null hypersurfaces I. Uniqueness and application to Killing horizons
Marc Mars, Gabriel Sánchez-Pérez
This is the first in a series of two papers with sequel [arXiv:2501.03983] where we analyze the transverse expansion of the metric on a general null hypersurface. In this paper we…
Null hypersurface data and ambient vector fields: Killing horizons of order zero/one
Miguel Manzano, Marc Mars
In this work, we study null hypersurfaces admitting a privileged vector field which is null and tangent at the hypersurface. We derive an identity that relates the deformation…
Abstract null geometry, energy-momentum map and applications to the constraint tensor
Marc Mars
We introduce and study the notion of null manifold. This is a smooth manifold endowed with a degenerate metric with one-dimensional radical at every point. We al…