Archive of IAS Physics Group Meetings

We would like to discuss about soft gravitons. On the one hand, they enter in the soft theorems of gravity scattering which exhibit universal structures useful in the S-matrix program (e.g., 1404.4091, 1406.6987). On the other hand, they appear in...

The pure spinor formalism is an alternative description of the superstring which is manifestly spacetime supersymmetric and can be covariantly quantized. As a consequence, in recent years many superstring amplitudes which were impractical to...

Scattering amplitudes, in a wide variety of gauge theories, and independent of dimension and gauge group, have surprising kinematic structure which is currently only understood in terms of graphical rules relating the kinematic weights of graphs, in...

In the Friday seminar last week, Jennifer Lin talked about our joint work to characterize gravitational effective theories whose UV completions are dual to CFT’s on the boundary. I will discuss our attempt at its converse: how to characterize CFT’s...

We will discuss the various algebraic structures that appear when studying supersymmetric operators in SCFTs in various dimensions and the connections between them.

For example, topics may include relatively standard constructions such as chiral...

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...

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.

Back...

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...