2 papers
gr-qc2011
A class of gauges for the Einstein equations
Michael Reiterer, Eugene Trubowitz
A class of gauges for the Einstein vacuum equations is introduced, along with three symmetric hyperbolic systems. The first implies the local realizability of the gauge. The second…
gr-qc2009
A formalism for analyzing vacuum spacetimes
Michael Reiterer, Eugene Trubowitz
The Einstein vacuum equations in the formulation developed by Newman, Penrose [NP] and Friedrich [Fr] are expressed in terms of a Lie superbracket. Differential identities are deri…