Events and Activities

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Apr
09
2026

IAS Quantum Aspects of Black Holes Group Meeting

Averaging over N
Edward Witten
11:00am|Bloomberg Hall Physics Library

Abstract:  "Wormholes" seem to describe ensemble averages of some kind, but in realistic models of holography, like AdS_4xS^7, it seems there isn't anything to average over, except, in some examples, a single integer N. Is "averaging over N" enough...

Apr
09
2026

Joint IAS/PU Number Theory

Local Intertwining Relation
Sug-Woo Shin
3:30pm|Simonyi 101 and Remote Access

The local intertwining relation (LIR) is an identity that gives precise information about the action of normalized intertwining operators on parabolically induced representations. It plays a central role in Arthur’s endoscopic classification for...

Apr
09
2026

Princeton University Donald R. Hamilton Colloquium Series

The Search for Axion Dark Matter
Benjamin Safdi
4:00pm|Jadwin Hall A-10

Abstract: Axions are some of the best-motivated beyond the Standard Model particle candidates at present. These ultralight particles may account for the cosmological dark matter and explain other outstanding problems in nature, such as the strong-CP...

Apr
10
2026

IAS/Princeton/Montreal/Paris/Tel-Aviv Symplectic Geometry Zoominar

Equivariant Contact Floer Cohomology for Quotient Spaces
Eric Kilgore
9:15am|Remote Access

I will discuss some recent work establishing the orderability of contact manifolds which arise as a quotient of an aspherically fillable manifold by a finite group action which extends (non-freely) to the filling. This generalizes the well known...

Apr
10
2026

Princeton University High Energy Theory Seminar

Defects in N=1 Minimal Models and RG Flows
Matthias Gaberdiel
11:00am|Jadwin Hall, PCTS Room 407

Abstract: Topological defects in the N=1superconformal minimal models are constructed using their coset description. These topological defects are then used to constrain the possible RG flows of the N=1 superconformal minimal models. I will also...

Apr
13
2026

Computer Science/Discrete Mathematics Seminar I

Catalytic Tree Evaluation from Matching Vectors
Seyoon Ragavan
11:00am|Simonyi Hall 101 and Remote Access

What is the relative computational power of time and space? Tree evaluation (TreeEval) has become a central problem in understanding this question, especially after its application by Williams (STOC 2025, IAS CSDM seminar 9/23/25) to prove a...

Apr
13
2026

IAS CMP/QFT Group Meeting

Phases of Local Inference
Sarang Gopalakrishnan
11:00am|Bloomberg Lecture Hall (IAS)

Abstract: How well can an observer making local measurements learn about global properties of a system, e.g., its charge? I will motivate this question in the quantum setting, and then turn to some results on classical stochastic processes. I will...

Apr
13
2026

Princeton University Gravity Initiative Seminar

Instabilities of near-extremal black branes
Alex Buchel
12:30pm|Jadwin Hall, Princeton Gravity Initiative, 4th Floor

Abstract: Extremal horizons (and associated emergent quantum criticality of the corresponding holographic models) receive strong quantum corrections at very low temperatures.  We point out that when such models are embedded in top-down holography...