This thesis examines topics in ultrametric physics, by which is meant physical theories involving $p$-adic numbers or the $p$-adic distance function.

# Events Archive

## Events Archive

### FPO - Christian Jepsen ""Physics of the Ultrametric"

### FPO - Yale Fan - "Topological Structures in Supersymmetric Gauge Theories"

This thesis explores the nonperturbative physics of three-dimensional gauge field theories with varying amounts of supersymmetry through an analysis of their one-dimensional topological substructures.

### Biophysics Seminar: Andrew Leifer, Princeton University | Princeton open ventilation monitor project|Zoom

Zoom meeting ID: 935 3760 0219

To receive a password, please register at https://forms.gle/JuQdueuZwcQudP9X6

### HET Seminar | Wei Song, Member, School of Natural Sciences, Institute for Advanced Study; Tsinghua University | “Entanglement Entropy in Flat Holography” | via Zoom

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

1 - If you have Zoom installed on your device, enter the following meeting ID: 730333408, click Join Meeting.

### FPO - Jaan Altosaar "Probabilistic Modeling of Structure in Science: Statistical Physics to Recommender Systems"

Abstract

### Pheno & Vino Seminar | Jan Heisig, CP3 UC Louvain | "Probing dark matter with cosmic-ray antiprotons" Zoom link: bit.ly/phenoandvino

Cosmic-ray observations provide a powerful probe of dark-matter annihilation in the Galaxy. In this talk I present recent analyses of the AMS-02 antiproton data, reducing cosmic-ray propagation uncertainties by fitting at the same time dark-matter and cosmic-ray propagation parameters.

### Biophysics Seminar: Vir Bulchandani, University of California at Berkeley | Digital herd immunity and COVID-19|Zoom

Zoom meeting ID: 967 8799 8386

To receive a password, please register at https://forms.gle/xxxinHt1vAT3tZnf9

### FPO - Sonia Zhang - "Topology in Quantum Magnets and Superconductors"

A unifying theme in understanding the macroscopic properties of quantum materials is the concept of emergence, where novel effects and unusual phases arise from the interplay of spin-orbit effects, band topology and strong correlation.

### Mathematical Physics Seminar: Simone Warzel,TU-Munich, "Spectral Gaps, Incompressibility and Fragmented Matrix-Product State in a Fractional Quantum Hall System"

In the thin cylinder regime Haldane’s pseudo-potential corresponding to one-third filling results in a frustration-free fermionic lattice Hamiltonian which is dipole-conserving with an added electrostatic interaction. Its zero-energy eigenspace is exponentially large.

### FPO - Yunqin Zheng - "Tensor Network States, Entanglement, and Anomalies of Topological Phases of Matters"

Abstract

### Biophysics Seminar: Xiaoliang Sunney Xie, Peking University | In Search of the COVID-19 Cure: Neutralizing Antibodies via Single Cell Genomics|via Zoom

Please join us here:

https://princeton.zoom.us/j/98819915715?pwd=dmsrNWthYldVKytFY1BaNW0zWmVEQT09

### Princeton Gravity Initiative | PCTS Workshop, Exploring Supermassive Black Holes

### HET Seminar | Ying Zhao, Member, School of Natural Sciences, Institute for Advanced Study | "A Quantum Circuit Interpretation of Evaporating Black Hole Geometry" | via Zoom

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

1 - If you have Zoom installed on your device, enter the following meeting ID: 730333408, click Join Meeting.

### Mathematical Physics Seminar: Uzy Smilansky, Weizmann Institute, "Systematics of spectral shifts in random matrix ensembles"

We chose a $N\times N$ Hermitian matrix randomly picked from one of the random Gaussian matrix ensembles $(\beta =1,2,4)$ - the reference matrix.

### Pheno & Vino / Siddharth Mishra-Sharma, NYU | "Statistical inference of dark matter substructure with weak and strong gravitational lensing" | bit.ly/phenoandvino

I will describe two separate methods to statistically infer the properties of dark matter substructure using, in turn, (astrometric) weak and strong lensing observations.

### HET Seminar | Davide Gaiotto, Perimeter Institute | “Twisted M-theory and Holography” | via Zoom

Description:

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

1 - If you have Zoom installed on your device, enter the following meeting ID: 730333408 - click Join Meeting.

### Gravity Initiative Lunch, Fani Dosopoulou | PCTS

### Canceled - Biophysics Seminar: Gurol Suel, University of California San Diego: TBD|Joseph Henry Room

### Condensed Matter Seminar | Alexandre Blais, Usherbrooke | "To be announced." | Joseph Henry Room

### Pheno & Vino | Carlos Blanco, U of Chicago | "New Constraints on Dark Matter from Organic Targets: What Organic Chemistry Can do for Direct Detection" | Zoom link: bit.ly/phenoandvino

As the age of WIMP-scale dark matter (DM) draws to a close thanks to the ever-increasing sensitivity of direct detection experiments, the majority of sub-GeV DM parameter space remains to be explored. Sub-GeV DM can excite electronic transitions in a variety of molecular and nano-scale systems which have sub-eV scale thresholds.