Archive of IAS Friday High Energy Theory Seminars

Abstract: Since the discovery of the Amplituhedron in 2013, positive geometry has attracted considerable interest in both physics and mathematics, revealing connections between scattering amplitudes and cosmological correlators on the one hand, and...

Abstract: In this talk, I will give an overview of the types of problems I work on in string phenomenology, with a specific view to how to relate Calabi-Yau geometry to axions in four dimensions. I'll discuss the broad-stroke features we find of...

Abstract: Homotopy theory and category theory have the capability to provide many insights into the structure of quantum field theory. Using these tools I will explain a comprehensive framework for characterizing the infrared (IR) phases of a...

Abstract: A key property of a global symmetry's anomaly is its order: the smallest integer n for which the diagonal symmetry of the n-copy system is anomaly-free. While many familiar lattice anomalies have finite order, perturbative anomalies in the...

Abstract: Over the last few years it has been understood that black holes sufficiently close to extremality receive large quantum gravity corrections from large fluctuations of the metric. These corrections modify standard properties of near...

Abstract: I will discuss the bulk mechanism of the stringy exclusion principle in the AdS3/CFT2 case. Consider the duality between  string theory on AdS3 × S3 × M4 and Sym^N(M4). At finite N, both the chiral-chiral spectrum and the number of the...

Abstract: It is well-known that the Hilbert space of a quantum field theory does not factor into a tensor product of degrees of freedom in a region and its complement. Nevertheless, the split property guarantees that there exists a factorization...

Abstract: Inflation may have occurred at energies up to 10^16 GeV, far beyond any terrestrial collider. The "cosmological collider" program aims to extract the mass spectrum and spin content of particles present during inflation from non-Gaussian...

Abstract: For Pauli stabilizer codes—such as surface codes and color codes—transversal logical gates are strongly constrained by the Bravyi–König bound. In particular, implementing a non-Clifford gate transversally (as required for universality)...

Abstract: In this talk, I will discuss Cosmohedra. These are geometric objects which encode the vacuum wavefunction for theories with colored scalars with cubic interactions. I will start by introducing the vacuum wavefunction, both in Minkowski and...