Archive of IAS Monday High Energy Theory Seminars

Oct
09
2017

High Energy Theory Seminar

Causality and the Length Operator
2:30pm
Causality in quantum field theory is encoded in the averaged null energy condition. I will describe how, in large-N CFTs, this energy condition is replaced by a stronger inequality involving the spectrum of the length operator in the dual AdS. This...
Oct
02
2017

High Energy Theory Seminar

Twofold Symmetries and Simplification of the Gravity Action
Grant Remmen
2:30pm
While the canonical formulation of graviton perturbation theory is calculationally complex, the freedoms of nonlinear field redefinition and gauge fixing allow for immense simplification and the uncovering of new structures in perturbative gravity...
Sep
18
2017

High Energy Theory Seminar

The Quantum Null Energy Condition from Causality
2:30pm
I will present a general argument for the local bound on the null-null component of the stress tensor in a QFT called the Quantum Null Energy Condition. The argument involves the study of correlation functions of operators undergoing modular...
Apr
03
2017

High Energy Theory Seminar

Holographic Complexity: A Progress Report
Rob Myers
2:30pm
I will describe some recent work studying proposals for computational complexity in holographic theories. I will discuss properties of the new gravitational observables and of complexity in the boundary theory.