Archive of IAS Monday High Energy Theory Seminars

Abstract: Matroids are combinatorial abstractions of the notion of linear independence. They are one of the main objects studied in the current special year in the School of Mathematics. I will talk about a notion of scattering amplitudes for...

Abstract: This talk will discuss what's new with some of the most interesting looking cosmological tensions: the Hubble tension, the growth of structure tension (S8, growth rate, Lyman Alpha) and Big Bang Nucleosynthesis (Lithium and Deuterium)...

Abstract: We construct compactifications of type IIB string theory that yield, at leading order in the α ′ α ′ and g s g s expansions, de Sitter vacua of the form envisioned by Kachru, Kallosh, Linde, and Trivedi. We specify explicit Calabi-Yau...

Abstract: Quantum critical points usually separate two distinct phases of matter. Here I will discuss a class of "unnecessary" quantum critical points that lie within a single phase of matter (much like the liquid-gas transition, except that they...

Abstract: I will describe constructions of lattice field theories that assign a single bosonic variable to each site, rather a conjugate pair x,p. The information to realize a non-trivial dynamics is realized by non-trivial Poisson brackets between...

Abstract: I will describe the one-loop partition function for strings propagating on AdS3 geometries with NS-NS flux (for generic values of AdS radius in string units). The essential ingredients that go into this analysis have been known for a while...

Abstract: We will discuss excitations with large spin and/or large particle number. For conformal theories this corresponds to investigating particular trajectories of heavy operators. 

We find trajectories with large approximate degeneracy and show...

Abstract: Conformal Field Theory (CFT) represents a class of quantum field theories that has profound applications across various physics domains, from critical phenomena in statistical mechanics to quantum matter, quantum gravity, and string theory...