Physics

Double field theory is an approach to make T-duality manifest in low energy Lagrangians by doubling the number of spacetime dimensions. It features an intriguing generalization of Riemannian geometry and may help understand some aspects of string...

We review our recent works on the index calculations related to 4d, 5d, and 6d maximally supersymmetric theories, where we have explored the 't Hooft operators, instantons, and monopole string junctions. In addition, we provide a tentative solution...

The discovery of the accelerating universe has led to the dramatic new view that our universe may be one of the many universes in which low energy physical laws take different forms: the multiverse. I explain why/how this view is supported both...

Recently, the ATLAS and CMS collaborations have announced exciting hints for a Standard Model-like Higgs boson at a mass of approximately 125 GeV. In this talk, I will discuss the potential consequences for the MSSM and low scale SUSY-breaking. As...

We compute the coefficient of the potential three-loop divergence in pure N=4 supergravity and show that it vanishes, contrary to expectations from symmetry arguments. The recently uncovered duality between color and kinematics is used to greatly...

ABSTRACT: The idea that the graviton may be massive has seen a resurgence of interest due to recent progress which has overcome its traditional problems. I will review this recent progress, which has led to a consistent ghost-free effective field...

The idea that the graviton may be massive has seen a resurgence of interest due to recent progress which has overcome its traditional problems. I will review this recent progress, which has led to a consistent ghost-free effective field theory of...