5 papers
Trapped submanifolds in Lorentzian geometry
José M M Senovilla
The concept of closed trapped surface is of paramount importance in General Relativity and other gravitational theories. However, it is a purely geometrical object. With the aim of…
New conservation laws for electromagnetic fields in gravity
José M. M. Senovilla
A recently found (gr-qc/0303036) 2-index, symmetric, trace-free, divergence-free tensor is introduced for arbitrary source-free electromagnetic fields. The tensor can be constructe…
Superenergy tensors and their applications
J. M. M. Senovilla
In Lorentzian manifolds of any dimension the concept of causal tensors is introduced. Causal tensors have positivity properties analogous to the so-called ``dominant energy conditi…
Properties of Bel currents
Ruth Lazkoz, Jose M M Senovilla, Raul Vera
The Bel tensor is divergence-free in some important cases leading to the existence of conserved currents associated to Killing vectors analogously to those of the energy-momentum t…
Applications of Super-Energy Tensors
J. M. M. Senovilla
In this contribution I intend to give a summary of the new relevant results obtained by using the general superenergy tensors. After a quick review of the definition and properties…