Week 06.10.2018 – 14.10.2018


Connecting the weak gravity conjecture to the weak cosmic censorship

Regular Seminar Jorge Santos (University of Cambridge)

13:15 KCL
room S2.49

I will describe some counterexamples to (weak) cosmic censorship in anti-de Sitter spacetime that have been found recently. These are solutions in which the curvature grows without bound in a region of spacetime visible to infinity. I will also discuss a surprising connection between some of these counterexamples and an apparently unrelated conjecture called the weak gravity conjecture.

Topologically twisted indices and holography

Regular Seminar Alberto Zaffaroni (INFN, Milan Bicocca U.)

14:00 IC
room H503

Abstract: We define indices for topologically twisted supersymmetric theories from two to five dimensions. We apply them to the holographic study of AdS black holes, black strings and domain-walls across dimensions.


Some lessons from/for Supergravity in AdS4/CFT3

Regular Seminar Costantin Bachas (ENS Paris)

14:00 QMW
room G O Jones 610

I will first review the AdS4/SCFT3 correspondence with N=4 supersymmetry. I will then focus on two special aspects which are important in exploring the string landscape: (1) The existence of N=2 moduli and their fate in gauged supergravity; (2) Special degeneration limits for which the low-energy limit is a theory of bigravity or massive gravity.