Physics

High Energy Theory Seminar

March 28, 2016 | 2:30pm - 4:00pm
We consider the question of whether the leading contribution to the entanglement entropy in holographic CFTs is truly given by the expectation value of a linear operator as is suggested by the Ryu-Takayanagi formula. We investigate this property by...

High Energy Theory Seminar

March 25, 2016 | 1:45pm - 3:00pm
Applying conformal bootstrap techniques to 2d CFTs with an abelian current, we prove explicit bounds on the dimension of the lightest charged state in the theory.

Physics Group Meeting

March 23, 2016 | 2:00pm - 3:30pm
I would like to discuss the problem of categorification of Chern-Simons partition function on closed 3-manifolds. Physics constructions of Khovanov knot homology, which categorifies Jones polynomial, suggests that there should be a generalization to...

High Energy Theory Seminar

March 21, 2016 | 2:30pm - 3:30pm
In the first part we discuss the holographic entanglement entropy in AdS4/CFT3 for finite domains with generic shapes. For smooth shapes the constant term can be evaluated by employing a generalisation of the Willmore functional for two dimensional...

High Energy Theory Seminar

March 18, 2016 | 1:45pm - 3:00pm
We study 2d (0,2) quiver gauge theories on the world-volume of D1-branes probing singular toric Calabi-Yau 4-folds. The gauge theories for arbitrary toric singularities are constructed by means of partial resolution. Each gauge theory is expected to...

Physics Group Meeting

March 16, 2016 | 1:30pm - 3:00pm
Quantum mechanics is distinguished by three essential features: the Hugeness of Hilbert Space, I.e., the capacity for exponential complexity; the phenomenon of Entanglement; and the duality between Wave Function Collapse and Everett's

High Energy Theory Seminar

March 14, 2016 | 2:30pm - 4:00pm

Quantum mechanics is distinguished by three essential features: the Hugeness of Hilbert Space, I.e., the capacity for exponential complexity; the phenomenon of Entanglement; and the duality between Wave Function Collapse and Everett's Relative...

Physics Group Meeting

March 09, 2016 | 1:30pm - 3:00pm

In this discussion I will present the background to the integration-by-parts (IBP) machinery as used for Feynman integrals, and its applications. I will also discuss recent work linking IBP to some aspects of the algebraic geometry underlying...

High Energy Theory Seminar

March 04, 2016 | 1:45pm - 3:00pm

I will define the hemisphere partition function for B-brane boundary conditions in GLSMs and describe some applications to B-brane transport on spacial classes of (non-) abelian GLSMs.