Physics

I will review some properties of BPS particles in four-dimensional N=2 field theories. I will emphasize recent developments and unsolved problems including restrictions on the charges of BPS particles, ideas about their large charge degeneracies...

The claim that quantum gravity effects destroy the classical black hole horizon and has to be replaced by a firewall or horizon-scale structure is rather bold but is supported in string theory. I will discuss signs of this breakdown of effective...

We will discuss various aspects of the manifold of conformal field theories. Most of the time will be devoted to a review of older background material. It will allow us to give a unified and more conceptual treatment of some recent results.

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Relative entropy is a measure of distinguishability of states and plays a central in quantum information theory. We argue that it is a natural generalization of free energy to far from equilibrium states. A generalization of the standard replica...

I will show how hydrodynamics is modified if the underlying fluid constituents are massless Weyl fermions, which are anomalous at the quantum level. Because of the non-dissipative nature of the modification I will construct a partition function...

After a short introduction for non-experts to the LHC experiments, we can talk about prospects for the next run. In its broadest form the question open for discussion is whether we expect to discover something in the next two to five years or not...

Understanding the language of holographic geometry is a difficult problem. I propose a useful set of tools to supplement our known bulk-to-boundary dictionary. These tools make use of kinematic space, an integral transform of the bulk geometry, and...

We study the quantum cosmology of a universe with conformal matter. For homogeneous, isotropic metrics and matter, the quantum gravitational path integral may be performed exactly. The result is a "perfect bounce," in which the universe passes...

Here are some possible references to review before the group discussion:

S-matrix and Soft Theorems
http://arxiv.org/abs/1312.2229
http://arxiv.org/abs/1401.7026

Extended BMS Group
http://arxiv.org/abs/1406.3312
http://arxiv.org/abs/1510.03386

Hi...

I present a solution to the electroweak hierarchy problem which involves the relaxation of the Higgs mass in the early universe. I will briefly discuss the limits of validity of the model as well as potential experimental signatures.