Physics

Physics Group Meeting

October 31, 2018 | 1:45pm - 3:00pm
I will review the averaged null energy condition, the Markov property and the quantum null energy condition in quantum field theory from an information-theoretic point of view. I will give some explicit examples from finite quantum systems and free...

Physics Group Meeting

October 24, 2018 | 1:45pm - 2:45pm
I will discuss particle physics phenomenology from the point of view of statistical inference.
I will describe how the concept of information geometry can be used to equip the parameter space of a theory with a metric.
The central object in this...

High Energy Theory Seminar

October 22, 2018 | 2:30pm - 4:00pm
In a TQFT of homological type, such as arises from the topological twist of a supersymmetric theory, it is well known that the local operators form an algebra, associative in dimension d >= 1 and commutative in d >= 2. The product comes from...

High Energy Theory Seminar

October 19, 2018 | 1:45pm - 3:00pm
It is recently recognized that the global symmetry of a theory can be a nontrivial mixture of 0-form and 1-form global symmetries, called 2-group symmetry. A place where 2-group symmetry ubiquitously exists is 6d N=(1,0) little string theories. In...

Physics Group Meeting

October 17, 2018 | 1:45pm - 3:00pm
I will review some of the connections between asymptotic symmetry groups, soft theorems for scattering amplitudes, and memory effects. If time permits I will also discuss special boundary operators for asymptotically flat gravity and their relation...

High Energy Theory Seminar

October 15, 2018 | 2:30pm - 4:00pm
All of the tree amplitudes are constructed for four supersymmetric theories in six dimensions using spinor-helicity variables and the CHY formalism. Two of the theories, the world volume theories of an M5-brane and a D5-brane, only have nonzero...

High Energy Theory Seminar

October 12, 2018 | 1:45pm - 3:00pm
We study the phase diagram of SU(N)XSU(N) gauge theory with massive bifundamental Fermion at zero temperature. Assuming that the theory is confining and gapped, some constraints that come from anomalies can be put on the phase diagram as a function...

High Energy Theory Seminar

October 08, 2018 | 2:30pm - 4:00pm
In this talk I will discuss how to apply the S-matrix bootstrap maximization program to the 2d bosonic O(N) integrable model which has N species of scalar particles with mass m and no bound states. We show that the known S-matrix follows from...