Speaker:
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Carlo Rovelli
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Title: |
GENERAL RELATIVISTIC QUANTUM PHYSICS: Background independent scattering amplitudes, boundary
formalism, local particles and partial observables |
Abstract: |
(i) I present some preliminary results on background independent
calculations of particle
scattering amplitudes. In particular, I discuss the derivation of the
graviton propagator,
from loop quantum gravity and the spinfoam formalism.
(ii) I illustrate the boundary formulation of quantum field theory, its role
in a background
independent context, and how "particles" emerge in this language.
(iii) More in general, I discuss how systematic physical predictions can be
extracted from
a general relativistic quantum field theory: I illustrate the notion of
"partial observable",
and discuss the issue of the physical significance of the spectrum of these
observables,
which controls the interpretation of the area and volume discreteness.
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Talk: |
Transparencies, Recorded Talk
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