4 papers · 1 filter
Unimodular gravity as an initial value problem
J. E. Herrera, Y. Bonder
Unimodular gravity is a compelling modified theory of gravity that offers a natural solution to the cosmological constant problem. However, for unimodular gravity to be considered…
The c-completion of Lorentzian metric spaces
Saúl Burgos, José Luis Flores, Jónatan Herrera
Inspired by some Lorentzian versions of the notion of metric and length space introduced by Kunzinger and Sämman, and more recently, by Müller, and Minguzzi and Sühr, we revisit th…
A novel notion of null infinity for c-boundaries and generalized black holes
I. P. Costa e Silva, J. L. Flores, J. Herrera
We give new definitions of null infinity and black hole in terms of causal boundaries, applicable to any strongly causal spacetime . These are meant to extend the standard o…
Causality and c-completion of multiwarped spacetimes
L. Aké Hau, J. L. Flores, J. Herrera
In this paper a systematic study of the causal structure and global causality properties of multiwarped spacetimes is developed. This analysis is used to make a detailed descriptio…