 Speaker:  Simone Speziale

Title: 
On the perturbative expansion of a quantum field theory around a topological sector 
Abstract: 
The idea of treating general relativistic theories in a perturbative expansion around a topological theory has been recently put forward in the quantum gravity literature. Here we investigate the viability of this idea, by applying it to conventional YangMills theory on flat spacetime. We find that the expansion around the topological theory coincides with the usual expansion around the abelian theory, though the equivalence is nontrivial. In this context, the technique appears therefore to be viable, but not to bring particularly new insights. Some implications for gravity are discussed.

Talk: 
Transparencies, Recorded Talk

 