299 citations · 2k across the 90 of their papers we have counts for
4 papers · 1 filter
A note on quasi-local energy
Enrique Alvarez, Jesus Anero, Guillermo Milans del Bosch +1
A definition of quasi-local energy in a gravitational field based upon its embedding into flat space is discussed. The outcome is not satisfactory from many points of view.
Massive Unimodular Gravity
Enrique Alvarez, Jesus Anero, Guillermo Milans del Bosch +1
A ghost free massive deformation of unimodular gravity (UG), in the spirit of {\em mimetic massive gravity}, is shown to exist. This construction avoids the no-go theorem for a Fie…
Quasi-local energy and compactification
Enrique Alvarez, Jesus Anero, Guillermo Milans del Bosch +1
Based on the quasi-local energy definition of Brown and York, we compute the integral of the trace of the extrinsic curvature over a codimension-2 hypersurface. In particular, we s…
Physical content of Quadratic Gravity
Enrique Alvarez, Jesus Anero, Sergio Gonzalez-Martin +1
We have recently undergone an analysis of gravitational theories as defined in first order formalism, where the metric and the connection are treated as independent fields. The phy…