Physics

An analytical understanding of large-scale matter inhomogeneities is an important cornerstone of our cosmological model an helps us interpreting current and future data. The standard approach, namely Eulerian perturbation theory, is unsatisfactory...

I will present recent work, done in collaboration with Daniel Roberts, on the global memory of initial conditions that is sometimes, but not always, retained by fluctuating fields on de Sitter space, Euclidean anti de Sitter space, and trees.

In two-dimensional N=(2,2) R-symmetric theories of vector and chiral multiplets on the two-sphere, the partition function as well as expectation values of supersymmetric operators can be computed with localization techniques. Depending on the choice...

Almheiri, Marolf, Polchinski, and Sully have claimed that unitarity of black hole evaporation is inconsistent with the existence of a smooth horizon. I will argue that computational restrictions prevent the type of thought-experiment which...

We propose a new search strategy for high-multiplicity hadronic final states. When new particles are produced at threshold, the distribution of their decay products is approximately isotropic. If there are many partons in the final state, it is...

In this talk, we shall provide a classification of extremal scaling geometries in Einstein-Maxwell-Dilaton theories, allowing for the possibility of a broken U(1) symmetry, and examine whether they constitute acceptable ground for holographic...

I'll describe a new link between supersymmetric gauge theories, with gauge group G, and the Yangian for the Lie algebra of G. The main result is that a certain twisted, deformed N=1 supersymmetric gauge theory, with gauge group G, is "controlled" by...