To connect to the HET Seminar via Zoom, please click the following link:

https://theias.zoom.us/j/96660745132?pwd=Y3FPUWVDZlNwUEdINkxjSnNhK0dpZz09

# Events Archive

## Events Archive

### HET Seminar | Nafiz Ishtiaque, Member, School of Natural Sciences, IAS | "4d Chern-Simons Theory and a Stringy Point of View on the Bethe/Gauge Correspondence for Superspin Chains" | via Zoom

### HET Seminar | Surjeet Rajendran, Johns Hopkins University | "Firewalls in General Relativity" | via Zoom

**To connect to the HET Seminar via Zoom, please click the following link:**

https://theias.zoom.us/j/83432499354?pwd=TkhMZWFJK2E1UzRyeUppU01pZVQwUT09

### PGI Virtual Seminar Series | Eliot Quataert, PU "Horizon-scale Modeling of Black Hole Accretion"

Abstract: In this talk, I will provide an overview of theoretical models of black hole accretion aimed primarily at non-specialists. I will focus in particular on efforts to understand the dynamics of, and radiation from, plasma in the near-horizon environment, both analytically and using numerical simulations.

### Biophysics Seminar: Kinneret Keren, Technion, Israel| Topological defects in the nematic order of actin fibers as organization centers of Hydra morphogenesis| Zoom

Morphogenesis, the emergence of functional form in a developing organism, is one of the most remarkable examples of pattern formation in nature. Despite substantial progress, we still do not understand the organizational principles underlying the convergence of this process, across scales, to form viable organisms under variable conditions.

### HET Seminar | Scott Collier, PCTS | "Comments on the Narain ensemble of free CFTs" | via Zoom

To join HET Seminar please click link below:

### HET Seminar | Ying-Hsuan Lin, Harvard | "Lorentzian Dynamics and Factorization Beyond Rationality" | via Zoom

To join HET Seminar please click link below:

### PGI Virtual Seminar Series | Maya Fishbach, NU "Minding the Gap: Lessons from LIGO-Virgo’s Biggest Black Holes"

Abstract:

### Biophysics Seminar: Karen Alim, Technische Universität München| Network morphology to store memories| Zoom

Simple organisms manage to thrive in complex environments. Remembering information about the environment is key to take decisions. Physarum polycephalum excels as a giant unicellular eukaryote being even able to solve optimisation problems despite the lack of a nervous system.

### HET Seminar | Daniel Kapec, Member, School of Natural Sciences, IAS |"Comments on the Quantum Field Theory of the Coulomb Gas Formalism" | via Zoom

To connect to the HET Seminar via Zoom, please click the following link:

https://theias.zoom.us/j/96660745132?pwd=Y3FPUWVDZlNwUEdINkxjSnNhK0dpZz09

### HET Seminar | Patrick Hayden, Stanford University | "Fault-tolerant qubit from a constant number of components" | via Zoom

**To connect to the HET Seminar via Zoom, please click the following link:**

https://theias.zoom.us/j/83432499354?pwd=TkhMZWFJK2E1UzRyeUppU01pZVQwUT09

### PGI Virtual Seminar Series | Antony Speranza, PI "Symmetries, observables, and entropy of black hole horizons"

Abstract:

### HET Seminar | Alex Lupsasca, Princeton Gravity Initiative | "The Black Hole Photon Ring" | via Zoom

To join HET Seminar please click link below:

### PGI Virtual Seminar Series | Grigorios Fournodavlos, Sorbonne Université "Stable Big Bang formation"

In this talk we will investigate the past dynamics of cosmological solutions to Einstein's equations, containing a Big Bang singularity. More precisely, we will focus on the classical generalised Kasner examples. The celebrated "singularity'' theorem of Hawking states that the past of sufficiently small perturbations of such solutions are...

### PCTS: Celestial Holography

Required but free registration is now open on line at http://pcts.princeton.edu/programs/current/celestial-holography/134

### PCTS: Celestial Holography

Required but free registration is now open on line at http://pcts.princeton.edu/programs/current/celestial-holography/134

### PCTS: Celestial Holography

Required but free registration is now open on line at http://pcts.princeton.edu/programs/current/celestial-holography/134

### PCTS: Celestial Holography

### HET Seminar | Xiao-Gang Wen, Massachusetts Institute of Technology | "A Categorical and Holographic View of Symmetry" | via Zoom

**To connect to the HET Seminar via Zoom, please click the following link:**

https://theias.zoom.us/j/83432499354?pwd=TkhMZWFJK2E1UzRyeUppU01pZVQwUT09

### Virtual Seminar Series | Sebastiano Bernuzzi (Friedrich-Schiller-Universität Jena) "Modeling the strong-field dynamics of binary neutron star merger"

The observation of gravitational and electromagnetic waves from a binary neutron star (BNS) merger in August 2017 conveyed unique information on the nature of matter at supranuclear densities, on the origin of short-gamma ray burst, on the production site of of heavy elements in the Universe, and on cosmography.