The XXIX International Conference on Supersymmetry and Unification of Fundamental Interactions (SUSY 2022)

Session

Gravity and Supergravity

7

29 Jun 2022, 16:00

Conference Centre “Karolos Papoulias” (University of Ioannina (GR))

Conveners

Gravity and Supergravity

• Herve Partouche (Centre National de la Recherche Scientifique (FR))

75. Ising Universe

Mr Antonios Kalogirou (National Technical U)

29/06/2022, 16:00

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.

112. New Methods for Old Problems: Vacua of Supergravity Theories

Dario Partipilo

29/06/2022, 16:20

Charting and analysing vacua of supergravity theories is a fundamental task to find which models can be related to String Theory as well as to understand supersymmetry breaking, the possible mechanisms to generate critical points with a positive value of the cosmological constant and which supergravities lead to Anti-de Sitter (AdS) vacua with an interesting holographic dual. Among all...

117. Curvature invariants for accelerating, rotating and charged black holes in (anti-)de Sitter spacetime

Georgios Kraniotis

29/06/2022, 16:40

The curvature scalar invariants of the Riemann tensor are important in General Relativity because they allow a manifestly coordinate invariant characterisation of certain geometrical properties of spacetimes such as, among others, curvature singularities, gravitomagnetism. We calculate explicit analytic expressions for the set of Zakhary-McIntosh curvature invariants for accelerating...

56. De Sitter vacua in gauged Supergravity and the Swampland

Matteo Morittu (University of Padua)

29/06/2022, 17:00

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.

71. Dynamically induced Planck scale and inflation in Palatini quadratic gravity

Dr Ioannis Gialamas (National and Kapodistrian University of Athens)

29/06/2022, 17:20

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...