After the Higgs mechanism breaks the SU(2)xU(1) symmetry of the Electroweak sector of the Standard Model, we find trilinear and quartic terms coupling photons and W bosons. This leads to the experimentally testable prediction that two colliding high-energy photons can convert into two W bosons. Measuring this interaction would be a unique...

# Events Archive

## 2020

### Special Seminar | Turning light into matter: observing photon-induced WW production at the LHC with ATLAS | William McCormack | LBL

### Special Seminar | Searching for Clues to a Matter Dominated Universe with Liquid Argon Time Projection Chambers | Yeon-Jae Jwa | Columbia University

We live in a matter-dominated Universe. Sakharov's famous argument listed three necessary conditions for such a manifestation of matter dominance: There needs to be a baryon number violating process; CP symmetry violation; and interactions out of thermal equilibrium.

### It from Qubit Workshop | Online Workshop on Qubits and Black Holes | December 7-9, 2020 | 9:00am - 6:00pm | via Zoom

This workshop will focus on the quantum mechanics of black holes with the goal of understanding how spacetime encodes quantum information. This meeting is sponsored by the “It from Qubit" collaboration. All talks will take place on Zoom. The link for the talks will be announced prior to the workshop.

### HET Seminar | Alexander Zhiboedov, CERN | "Solving unitarity with contraction mappings" | via Zoom

To join HET Seminar please click link below:

https://princeton.zoom.us/j/98595504817?pwd=QWxDMzFGWjdBdmVBRTFyQmtvajVNQT09(link is external)

Meeting ID: 985 9550 4817

### Gravity Group Lunch Seminar, Mariangela Lisanti | Princeton, Dark Matter Phenomenology

This week, Mariangela Lisanti and her group will give us an overview of their research in dark matter phenomenology.

### EDI initiative "All Hands" meeting

**EDI initiative "All Hands" Meeting
2 pm (EST), Thursday, December 3, 2020 **

All working groups should plan to present ~5-10 minutes of updates on their ongoing projects. We're looking forward to seeing you all then!

### Physics Department Book Club Kick off Event | "Einstein on Race and Racism" by Fred Jerome and Rodger Taylor |via Zoom

We would like to invite you all to the Physics Department Book Club Kick Off event on Wednesday, December 2, 2020 at 3:30pm via Zoom!

Join us as we introduce the book "Einstein on Race and Racism" by Fred Jerome and Rodger Taylor.

Click on the link below to join our Kick Off event!

Meeting ID: 942 9640 4435

### HEE Seminar- Taylor Faucett-UCI-Physics Learning from Machines Learning

Abstract:

### HET Seminar | Andrew Strominger, Harvard University | "Progress on Celestial Holography" | via Zoom

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

https://theias.zoom.us/j/92467790530?pwd=WUI3U1RCRCtYSjJyV1A2Vmx6dk81QT09

Meeting ID: 924 6779 0530

### PGI Virtual Seminar Series | Fani Dosopoulou, "The Merger History of Elliptical Galaxies: Mass Deficit"

Abstract: The structure and kinematics of galactic nuclei are fossil relics of the merger histories of galaxies and of the interaction between stars and SMBH binaries. Stars ejection during the SMBH binary evolution should reduce a galaxy’s central density and expand its core.

### Biophysics Seminar: Kranthi Kiran Mandadapu, University of California Berkeley: On the role of motility and glassy dynamics in growth of bacterial monolayers into the third dimension| Zoom

Many mature bacterial colonies and biofilms are complex three-dimensional (3D) structures. A key step in their developmental program is a transition from a two-dimensional (2D) monolayer into a 3D architecture.

### Gravity Group Lunch Seminar, Anne Gambrel | KICP, U. Chicago "The XFaster Power Spectrum and Likelihood Estimator and its Application to SPIDER"

Every analysis of cosmic microwave background observations faces the challenge of compressing large amounts of data into the comparatively tiny spaces of power spectra and cosmological parameters.

### Hamilton Colloquium Series, Cumrun Vafa, Harvard University, "The String Landscape and the Swampland"

String theory landscape of vacua point to new consistency conditions that a quantum gravitational system must satisfy. There are only a small number of quantum field theories that satisfy these conditions and all the rest belong to the `Swampland' which cannot be consistently coupled to gravity. In this talk I review some of these conditions...

### Condensed Matter Zoom Seminar | Titus Neupert,UZH | "Heating and blackhole dynamics in critical Floquet systems"

While driven interacting quantum matter is generically subject to heating and scrambling, certain classes of systems evade this paradigm. I will discuss such an exceptional class in periodically driven critical (1 + 1)-dimensional systems with a spatially modulated, but disorder-free time evolution operator.

### PRISM / PCCM Seminar Series Fall 2020

The Princeton Center for Complex Materials (PCCM) and the Princeton Institute for the Science and Technology of Materials (PRISM) co-sponsor a seminar series that is held on Wednesdays throughout the semester.

### HET Seminar | Alexey Milekhin, UCSB | "Quantum error correction and large N" | via Zoom

To join HET Seminar please click link below:

https://princeton.zoom.us/j/98595504817?pwd=QWxDMzFGWjdBdmVBRTFyQmtvajVNQT09

### PGI Virtual Seminar Series | Eliot Hijano Cubelos, "Where are BMS symmetries in the flat limit of AdS/CFT?"

Abstract: A holographic description of physics in Minkowski space is still elusive. A tempting approach is to implement a flat limit from AdS/CFT. Such a limit has not properly been understood, even at the level of the symmetries of the theory; How do BMS symmetries emerge from the flat limit of the asymptotic symmetries of anti-de Sitter space...

### Biophysics Seminar: Seppe Kuehn, University of Chicago| A sparse mapping from structure to function in microbial communities|Zoom

The metabolic function of microbial communities emerges through a complex hierarchy of genome-encoded processes, from gene expression to interactions between diverse taxa. Therefore, a central challenge for microbial ecology is deciphering how genomic structure determines metabolic function in communities.

### HET Seminar | Sridip Pal, Member, School of Natural Sciences, IAS | "Universality in Asymptotic Bounds and their Saturation in 2D CFT" | via Zoom

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

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

### Gravity Group Seminar | Speakers TBA "The Simons Observatory Instrument: Status of Ongoing Research at Princeton"

The Simons Observatory (SO) will be a cosmic microwave background (CMB) survey experiment with four small-aperture telescopes (SATs) and one large-aperture telescope, which will observe from the Atacama Desert in Chile.