Speaker
Prof.
Robertus Potting
(Universidade do Algarve)
Description
We present a model of gravity based on spontaneous Lorentz symmetry breaking. We start from a model with spontaneously broken symmetries for a massless 2-tensor with a linear kinetic term and a nonderivative potential, which is shown to be equivalent to linearized general relativity, with the Nambu-Goldstone (NG) bosons playing the role of the gravitons. We apply the a bootstrap procedure to the model based on the principle of consistent coupling to the total energy energy-momentum tensor. It is shown that the resulting lagrangian for the NG modes is equivalent to General Relativity in a fixed gauge.
Authors
Prof.
Alan Kostelecky
(Indiana University)
Prof.
Robertus Potting
(Universidade do Algarve)