Deformed general relativity

Understand

In this thesis, I investigate how to construct a self-consistent model of deformed general relativity using canonical methods and metric variables.

• The specific deformation of general covariance is predicted by some studies into loop quantum cosmology.
• I firstly find the minimally-deformed model for a scalar-tensor theory, thereby establishing a classical reference point, and investigate the cosmological effects of a non-minimal coupled scalar field.
• By treating the deformation perturbatively, I derive the deformed gravitational action which includes the nearest order of curvature corrections.