Events Archive

PGI Fall Seminar Series|Austin Joyce|Univeristy of Chicago|"Gravity as a Phase of Matter"
Mon, Nov 21, 2022, 12:30 pm1:30 pm

I will discuss the symmetries of (linearized) gravity and its interpretation as a gapless phase arising from the structure of mixed anomalies of these symmetries.

Biophysics Seminar: Tian-Ming Fu, Princeton University| Probing Biological Dynamics in Multicellular Organisms: from long-term electrophysiology to high-resolution imaging
Mon, Nov 21, 2022, 12:30 pm1:30 pm

The urgency to probe biological dynamics is impeded by a major challenge: the large dynamic range of biological processes—interactions of molecules within milliseconds can lead to changes across the whole-organism over days to years. It calls for measurements with both high spatiotemporal resolution and large-scale long-term coverage. However,…


A free lecture open to the public.
IAS HET Seminar | S. Josephine Suh, Member, School of Natural Sciences, IAS; Harvard University| “Spacetime and Gravity from Quantum Mechanics” | Bloomberg Lecture Hall & Zoom
Fri, Nov 18, 2022, 1:45 pm1:45 pm

Motivated by holographic duality and the Ryu-Takyanagi formula, we ask the question, “What quantum problem are Einstein’s equations solving?” Answering this question amounts to dissecting or “deconstructing” AdS/CFT to identify the quantum-mechanical origins of spacetime and gravity. We propose a solution involving a class of dynamical…


Research-Informed Teaching Strategies to Empower and Support All Genders in the Classroom
Wed, Nov 16, 2022, 2:00 pm3:30 pm

This interactive workshop on teaching strategies that can help promote student success, regardless of their gender. The discussion will revolve around studies that education researchers have shown to be effective in narrowing gender gaps in student achievement, paying particular attention to a study involving&nbsp…


Faculty, post docs, grads
SPECIAL SEMINAR-Prof. Cumrun Vafa (Harvard)-“The Dark Dimension”
Wed, Nov 16, 2022, 2:00 pm3:00 pm

Motivated from the Swampland program and combined with observational data, we argue that our universe enjoys one mesoscopic dimension of micron scale.  We explain why the KK excitation of graviton in this extra dimension is a good candidate for the dark matter.  Moreover we show that the Swampland dS conjecture naturally leads to the…

Mathematical Physics Seminar, Tues, Nov. 15, 4:30pm, Jadwin A06, Eliran Subag, Weizmann Institute, "Free Energy Landscapes and a Generalized TAP Approach"
Tue, Nov 15, 2022, 4:30 pm5:30 pm

In the Thouless-Anderson-Palmer approach to mean-field spin glasses, the free energy is presented as the infimum of a functional which TAP defined over the space of all possible magnetization vectors, subject to a convergence condition. Its self-averaging over exponentially many solutions at low temperature seems to be taken for granted, though…


PostPandemic Tool for Quantum Materials and vice-versa
Tue, Nov 15, 2022, 12:30 pm1:30 pm

Raman scattering, invented at the end of the last pandemic, can provide a wealth of information on the fractional, magnetic, lattice and charge excitations at the heart of quantum materials and devices. I will first discuss how Raman provides direct evidence for coupled phonon-electron fluids in topological semimetals, helping to explain their…


HET Seminar | Sabine Harribey, Nordita | “An application of melonic CFTs: The F-theorem” | PCTS & Zoom
Mon, Nov 14, 2022, 2:30 pm2:30 pm

Tensor models exhibit a melonic large-N limit. They were first introduced in zero dimension in the context of random geometry and quantum gravity. They were then generalized in d dimensions where they give rise in the infrared to a new kind of CFTs, analytically accessible, called melonic CFTs. In the first part of the talk, I will briefly…


Biophysics Seminar: Anders Hansen, MIT| Dynamics of 3D Genome Structure and Function
Mon, Nov 14, 2022, 12:30 pm1:30 pm

Animal genomes are folded into loops and topologically associating domains (TADs) by CTCF and loop extruding cohesins. These loops and domains are thought to play critical roles in regulating gene expression by regulating long-range enhancer-promoter interactions. But whether CTCF/cohesin loops are stable or dynamic structures was…


Free and open to the public
PGI Fall Seminar Series|Hector Okada da Silva|AEI|"Testing General Relativity in the Nonlinear Regime with Black-Hole Binaries"
Mon, Nov 14, 2022, 12:30 pm1:30 pm


The coalescence of compact binaries and the gravitational waves produced in this process provide an unique view into gravity in its dynamical, nonlinear regime. Proeminent during a black-hole coalescence is the plunge-merger stage, when the black holes collide at a large fraction of the speed of light and around which the…

IAS HET Seminar | Matteo Parisi, Institute for Advanced Study & Harvard University| “TBA” | Bloomberg Lecture Hall & Zoom
Fri, Nov 11, 2022, 1:45 pm1:45 pm


Wed, Nov 9, 2022, 2:00 pm3:30 pm

One of the unique features of quantum gravity is the lack of local observables and completeness of boundary observables (e.g. S-matrix in flat space or CFT correlators in AdS). I will show that the existence of such boundary observables is non-trivial and is equivalent to TCC in scalar field cosmologies. Moreover, it is deeply connected to the…

Hamilton Colloquium Series, Leonardo Rastelli, Stony Brook University, "Positivity Constraints on Theory Space", Jadwin A-10
Tue, Nov 8, 2022, 4:00 pm5:00 pm

The bootstrap program leverages symmetry and positivity to carve out the space of consistent quantum theories. In this talk I will highlight some of its recent successes, ranging from the numerical solution of statistical models at criticality to universal constraints on quantum gravity.


Recording of Talk:…


A free lecture open to the public.
Special Seminar Princeton Gravity Initative|Remo Ruffini|"The Role of Supernovae in Triggering the Formation of a Black Hole in Gamma Ray Bursts"
Tue, Nov 8, 2022, 2:00 pm3:30 pm

Remo Ruffini is the Co-Founder and Director of the International Center for Relativistic Astrophysics. He has served as Professor of Theoretical Physics at the University of Rome. He is an APS Fellow and a Google Fellow.

Abstract: Supernovae of constant luminosities, with a tight neutron star…

Biophysics Seminar: Kandice Tanner, NIH| Microenvironment regulation of metastasis
Mon, Nov 7, 2022, 12:30 pm1:30 pm

In the event of metastatic disease, emergence of a lesion can occur at varying intervals from diagnosis and in some cases following successful treatment of the primary tumor.  Genetic factors that drive metastatic progression have been identified, such as those involved in cell adhesion, signaling, extravasation and metabolism. However,…


A free lecture open to the public.
PGI Seminar Series Fall 2022|Sam Collingbourne|Columbia University|"The Gregory--Laflamme Instability of the 5D Schwarzschild Black String Exterior"
Mon, Nov 7, 2022, 12:30 pm1:30 pm

I will discuss a direct rigorous mathematical proof of the Gregory--Laflamme instability for the 5D Schwarzschild black string. This is a mode instability at the level of the linearised vacuum Einstein equation. Under a choice of ansatz for the perturbation and a gauge choice, the linearised vacuum Einstein equation can be…

IAS HET Seminar | Massimo Porrati, New York University; Institute for Advanced Study| “Partition Functions of Abelian Chern-Simons Theories on Handlebodies"” | Bloomberg Lecture Hall & Zoom
Fri, Nov 4, 2022, 1:45 pm1:45 pm

This talk reviews the use of radial quantization to compute Chern-Simons partition functions on handlebodies of arbitrary genus. The partition function is given by a particular transition amplitude between two states which are defined on the Riemann surfaces that define the (singular) foliation of the handlebody.  By requiring that the…


Dark Cosmos Seminar: Endothermic self-interacting dark matter in Milky Way-like halos
Tue, Nov 1, 2022, 4:00 pm5:30 pm

Self-interacting dark matter (SIDM) offers the potential to mitigate some of the discrepancies between simulated cold dark matter (CDM) and observed galactic properties.  In various SIDM models, dark matter particles can scatter with each other in elastic or inelastic collisions.  In my talk, I will discuss the effects of elastic…


CPBF - Fellow Candidate Symposium I
Tue, Nov 1, 2022, 9:30 am12:30 pm
IAS HET Seminar |Masanori Hanada, University of Surrey| “TBA” | Bloomberg Lecture Hall & Zoom
Mon, Oct 31, 2022, 2:30 pm2:30 pm