Events and Activities

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

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To contact the events office, please call (609) 951-4595 or email events@ias.edu

Dec
15
2025

IAS CMP/QFT Group Meeting

Generalized Pinning Fields and Renormalization Group Flows
Yifan Wang
11:00am|Bloomberg Lecture Hall (IAS)

Abstract: It is commonly believed that exact infra-red (IR) solutions for renormalization group (RG) flows are rare to come by. In this talk, we will consider codimension-one RG flows from pinning fields coupled to bulk local operators in conformal...

Dec
15
2025

IAS Phenomenology Lunch and Meet

Information Discussions on Phenomenology and New Theories beyond the Standard Model
12:30pm|Bloomberg Hall Biology Conference Room (1st Floor, Room 113)

This semester, we will be beginning a *very informal* get-together every Monday of people interested in/working on phenomenology and new theories beyond the standard model.  The idea is to discuss over lunch, perhaps meet up around 12.20, grab lunch...

Dec
15
2025

Members' Colloquium

Fundamental Groups of Algebraic Varieties and the Shafarevich Conjecture
Benjamin Thomas Bakker
1:30pm|Simonyi 101 and Remote Access

The fundamental group $\pi_1(X)$ is an important invariant of a complex algebraic variety X.  Despite its topological nature, it is closely connected to the geometry of many algebraic structures on X.  In this talk I want to discuss two elementary...

Dec
15
2025

Joint IAS/PU Arithmetic Geometry

Affine Schubert Varieties Are Splinters
Robert Cass
3:30pm|Simonyi 101 and Remote Access

Schubert varieties are known to be Frobenius split in positive characteristic by the work of Mehta and Ramanathan. More recently, Bhatt showed that the full flag variety for $GL_n$ is a splinter by entirely different methods. In this talk, we will...

Dec
16
2025

Joint IAS/PU Symplectic Geometry Seminar

Cohomologous Symplectic Forms with Different Gromov Widths
Shengzhen Ning
1:00pm|Simonyi 101 and Remote Access

For closed symplectic manifolds, the Gromov width is among the most fundamental symplectic capacities: it measures the size of the largest embedded symplectic ball and is sensitive to the perturbation of the symplectic forms. A natural question...

Dec
16
2025

IAS Amplitudes Group Meeting

Completeness from Gravitational Scattering
Francesco Calisto
2:30pm|Bloomberg Lecture Hall (IAS)

Abstract: Using scattering amplitudes dispersion relations, we demonstrate that in tree-level completions of gravity, for a broad class of symmetry groups, the existence of finitely many charged particles necessitates the existence of infinitely...

Dec
16
2025

Joint IAS/PU Groups and Dynamics Seminar

Partially Hyperbolic Actions of Semisimple Lie Groups
Kurt Vinhage
4:30pm|Simonyi 101

Zimmer proposed the study of higher-rank semisimple group actions in the 1980's after showing certain rigidity results, especially about associated cocycles in the measurable category. In this talk, I will describe recent progress towards...

Dec
17
2025

Special Groups and Dynamics Seminar

Asymptotic dimension, Isoperimetric Problem, and Traveling Salesman Problem in Groups
Anna Erschler
10:30am|Simonyi 101 and Remote Access

In many groups, the optimal diameter for the solutions of the isoperimetric problem is asymptotically equivalent to the lower bound coming from their cardinality; in this situation one says that the Følner function is lossless with respect to the...