A new quantization principle for quantum field theory

by Damiano Anselmi (Universita' di Pisa e INFN Pisa)

Wednesday 2 Nov 2022, 16:00 → 17:30 Europe/Rome

Aula Conversi (Dipartimento di Fisica - Ed. G.Marconi)

I derive the most general diagrammatic rules that give a unitary S matrix.I compare the usual option (Feynman diagrams) to a new one (theories containing physical and purely virtual particles). The latter leads to a new quantization principle. I illustrate its applications to the search of new physics beyond the standard model, and quantum gravity. In particular, I discuss the prediction for the tensor-to-scalar ratio r of primordial fluctuations (4/10^4 < r < 3.5/10^3), which could be tested within this decade.