Archive of IAS Friday High Energy Theory Seminars

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...

Abstract: The $\epsilon$-expansion is a widely used technique to study aspects of renormalization group flows and critical phenomena. In this talk, I will discuss  recent developments of the $\epsilon$-expansion in the study of boundary and defect...

Abstract: I will explore one of the most profound open question in particle physics, focusing on some exciting directions of my ongoing research activity: the strong CP problem. I will begin with an overview of the strong CP problem, highlighting...

Abstract: I will explain how the irreversibility of the renormalization group together with anomalies, including anomalies in the space of coupling constants, can be used to constrain the IR phases of defects in familiar quantum field theories. As...