43 citations · 248 across the 11 of their papers we have counts for
10 papers
High-energy scalarons in R^{2} gravity as a model for Dark Matter in galaxies
Christian Corda, Herman J. Mosquera Cuesta, Roberto Lorduy Gòmez
We show that in the framework of R^{2} gravity and in the linearized approach it is possible to obtain spherically symmetric stationary states that can be used as a model for galax…
The 3-dimensional Einstein-Klein-Gordon system in characteristic numerical relativity
W. Barreto, A. Da Silva, R. Gomez +3
We incorporate a massless scalar field into a 3-dimensional code for the characteristic evolution of the gravitational field. The extended 3-dimensional code for the Einstein--Klei…
Einstein boundary conditions for the Einstein equations in the conformal-traceless decomposition
Simonetta Frittelli, Roberto Gomez
In relation to the BSSN formulation of the Einstein equations, we write down the boundary conditions that result from the vanishing of the projection of the Einstein tensor normall…
Einstein boundary conditions in relation to constraint propagation for the initial-boundary value problem of the Einstein equations
Simonetta Frittelli, Roberto Gomez
We show how the use of the normal projection of the Einstein tensor as a set of boundary conditions relates to the propagation of the constraints, for two representations of the Ei…
First-order quasilinear canonical representation of the characteristic formulation of the Einstein equations
Roberto Gomez, Simonetta Frittelli
We prescribe a choice of 18 variables in all that casts the equations of the fully nonlinear characteristic formulation of general relativity in first--order quasi-linear canonical…
Einstein boundary conditions for the 3+1 Einstein equations
Simonetta Frittelli, Roberto Gomez
In the 3+1 framework of the Einstein equations for the case of vanishing shift vector and arbitrary lapse, we calculate explicitly the four boundary equations arising from the vani…