I study and will eventually (hopefully) construct diffeomorphism-invariant quantum theories of gravity, using the loop representation of General Relativity. Once I know enough about the subject to avoid saying anything particularly stupid, I shall put on this page a short explanation of just what the hell the previous sentence really means! Until then, ruminate on these:

A Primer on the new variables

Outline of a generally covariant Quantum Field Theory and a Quantum Theory of Gravity