3 papers
gr-qc2016
A big bounce, slow-roll inflation and dark energy from conformal gravity
Jack Gegenberg, Shohreh Rahmati, Sanjeev S. Seahra
We examine the cosmological sector of a gauge theory of gravity based on the SO(4,2) conformal group of Minkowski space. We allow for conventional matter coupled to the spacetime m…
gr-qc2016
Linearized gravity with matter time
Masooma Ali, Viqar Husain, Shohreh Rahmati +1
We study general relativity with pressureless dust in the canonical formulation, with the dust field chosen as a matter-time gauge. The resulting theory has three physical degrees…
gr-qc2015
Linearized 3D gravity with dust
Viqar Husain, Shohreh Rahmati, Jonathan Ziprick
Three-dimensional gravity coupled to pressureless dust is a field theory with one local degree of freedom. In the canonical framework, the dust-time gauge encodes this physical deg…