Conveners
Gravity and Supergravity
- Herve Partouche (Centre National de la Recherche Scientifique (FR))
We consider a real scalar field in de Sitter background and compute its thermal propagators.
We propose that non-trivial thermal effects in the |out⟩ vacuum can be encoded in the anomalous
dimensions of the d = 3 Ising model. One of these anomalous dimensions, the critical exponent
η, fixes completely a number of cosmological observables, which we compute.
I will show that critical de Sitter points of gauged Supergravity are typically in conflict with the Weak Gravity Conjecture when the gravitino has a vanishing or parametrically small mass. This puts all known stable de Sitter vacua of the N=2 theory in the Swampland.
In this talk we will consider a model of infation in the Palatini formulation of gravity with the addition of quadratic in curvature terms in the usual Einstein-Hilbert action.
The model under consideration corresponds to a two-field scalar-tensor theory, that involves the Higgs field and an extra scalar field stemming from a gauge U(1)_X extension of the Standard Model, which contains an...
