Seminario Teorico: Eran Palti

Date: 
12 November, 2018 - 11:30 - 12:30
Location: 
Aula Grassano

Dr. Eran Palti (Max-Planck-Institute for Physics - Munich)

Title: Distance and de Sitter Conjectures on the Swampland

Abstract:

The string theory Swampland programme aims at distinguishing quantum field theories which can be completed into quantum gravity in the ultraviolet from those which cannot. I will outline relations between different conjectural properties of the Swampland, showing how a coherent picture is emerging, and discuss a proposal for the microscopic physics underlying them. I will focus in particular on the Swampland Distance Conjecture which is concerned with large variations of scalar field expectation values. I will then discuss a proposed connection between this conjecture and the Swampland de Sitter conjecture. The latter gives a lower bound on the gradient of positive potentials, in particular implying that there are no (meta-)stable de Sitter vacua in string theory.