Events and Activities

Explore current and upcoming events and activities happening at the Institute for Advanced Study.

Oct
05
2026

Computer Science/Discrete Mathematics Seminar I

A Sharp Bound on the Integrality Gap in the 3-set
Eli Berger
11:00am|Simonyi 101 and Remote Access

Given a hypergraph with edges of size at most $3$, the $3$-set cover problem asks to determine the minimum size of a family of edges that covers the vertex set. As the problem is NP-hard, it is natural to consider its fractional (linear programming)...

Oct
05
2026

IAS CMP/QFT Group Meeting

Anomalous Wess–Zumino Quantization in Two Dimensions
Changha Choi
11:00am|Bloomberg Hall Physics Library (IAS)

Abstract: Anomalies can modify the quantization of topological couplings, as occurs in the three-dimensional parity anomaly. We will discuss a two-dimensional analogue in sigma models with Majorana-Weyl fermions and compact Lie group targets. By...

Oct
05
2026

Princeton University LFTP Seminar

Universality in the Axiverse
12:30pm|Jadwin Hall, 4th Floor, LFTP Space

Abstract: In this talk I will explain how hierarchies in divisor volumes in Calabi-Yau threefolds give rise to distinctive axion effective theories in string compactifications. I will then provide evidence that distributions of divisor volumes have...

Oct
05
2026

Members' Colloquium

From 5G Spectrum Auctions to Nondeterministic Communication Complexity
2:00pm|Simonyi 101 and Remote Access

A folklore belief in economics is that "simple auctions" should "perform well" if and only if the auction's participants view the items for sale as substitutes (as opposed to complements). How can this belief be formulated as a precise conjecture...

Oct
05
2026

IAS High Energy Theory Seminar

The O(N) Grassmannian
Hayden Lee
2:30pm|Bloomberg Lecture Hall (IAS) & Zoom

Abstract: I will discuss recent progress on a Grassmannian formulation of correlation functions in the large-N O(N) vector model, motivated by higher-spin holography. The formulation leads to a remarkably simple n-point formula and suggests an...

Oct
06
2026

Computer Science/Discrete Mathematics Seminar II

The Fundamentals of Analysis of Boolean Functions; An Old Timer Reminiscing About his Graduate Studies
Ehud Friedgut
10:30am|Simonyi Hall 101 and Remote Access

The recent flurry of AI-generated mathematical activity has brought an avalanche of new results. Among them are the resolution of some conjectures that I made more than a quarter of a century ago, as a graduate student. In this talk I’ll give the...

Oct
06
2026

Institute for Advanced Study / Princeton University Joint Astrophysics Colloquium

The future of gravitational-wave detection with pulsar timing: a data analysis perspective
Rutger van Haasteren
11:00am|Wolfensohn Hall

Abstract: Current pulsar timing array (PTA) projects are galactic-scale gravitational-wave (GW) detectors whose sensitivity is approaching the point at which a signal should become clearly detectable. Despite the strong evidence reported in the...