Events Archive

PCTS: Polarized Radiation from Supermassive Black Holes
Wed, May 12, 2021

Required, but free registration is now open on line at: http://pcts.princeton.edu/programs/current/polarized-radiation-near-supermassive-black-holes/141

Emission from astrophysical black hole sources is sensitive to the…

PCTS: Polarized Radiation from Supermassive Black Holes
Tue, May 11, 2021

Required, but free registration is now open on line at: http://pcts.princeton.edu/programs/current/polarized-radiation-near-supermassive-black-holes/141

Emission from astrophysical black hole sources is sensitive to the…

Biophysics Seminar: Justin Kinney, Cold Spring Harbor Laboratory| Massively parallel assays, machine learning, and the biophysics of gene regulation| Zoom
Mon, May 10, 2021, 12:15 pm12:15 pm

Gene expression in all organisms is controlled by short DNA and RNA sequences called cis-regulatory elements (CREs). Proteins in the cellular milieu bind to nucleic acid sequences present within CREs, interact with one another, and thus form macromolecular complexes that modulate the expression of nearby genes. My lab uses…

Speaker
A free lecture open to the public.
PCTS: Polarized Radiation from Supermassive Black Holes
Mon, May 10, 2021

Required, but free registration is now open on line at: http://pcts.princeton.edu/programs/current/polarized-radiation-near-supermassive-black-holes/141

Emission from astrophysical black hole sources is sensitive to the…

Gravity Group Lunch Seminar | Yilun Guan (Pittsburgh) & Brandon Hensley (Princeton) "The ACT View of the Galactic Center"
Fri, May 7, 2021, 12:00 pm12:00 pm

We present new maps of the Galactic Center in total intensity and polarization made with the Atacama Cosmology Telescope (ACT). We combine dedicated, arcminute-resolution ACT observations over a 32 deg^2 field with Planck intensity and polarization data at similar frequencies to produce maps with fidelity on both small and large angular scales…

EDI Seminar Series: Advancing Diversity at the PhD Level in Physics and Astronomy - Dr. Norman
Thu, May 6, 2021, 4:00 pm4:00 pm

Speaker: Dr. Dara Norman, a Full Scientist and Deputy Director of the Community Science and Data Center at the NSF’s National Optical and Infrared Astronomical Research Laboratory (NOIRLab)
Dr. Norman will highlight examples of past culture change in the field, growing trends toward implementation of the values that…

Speaker
FPO - Xinran Li - The energy resolution and the energy deposition processes in disordered targets for rare-event searches
Tue, May 4, 2021, 9:00 am9:00 am

Underground rare-event search is a substantial branch in particle physics, in which particle dark matter (DM) direct detection and neutrinoless double β decay (0νββ) are two major topics. The elusive nature of the signals puts stringent requirements on the detector contamination level. Some particular interactions also require specific…

HET Seminar | Ian Moult, Stanford University | "Conformal Colliders Meet the LHC" | via Zoom
Mon, May 3, 2021, 2:30 pm2:30 pm

To connect to the HET Seminar via Zoom, please click the following link:
https://theias.zoom.us/j/83432499354?pwd=TkhMZWFJK2E1UzRyeUppU01pZVQwUT09

Abstract:

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FPO - Yantao Wu - "Variational Monte Carlo Renormalization Group”
Mon, May 3, 2021, 2:00 pm2:00 pm
The renormalization group is an important method to understand the critical behaviors of a statistical system. In this thesis, we develop a stochastic method to perform the renormalization group calculations non-perturbatively with Monte Carlo simulations. The method is variational in nature, and involves minimizing a convex functional of the…
PGI Virtual Seminar Series | Anna Ijjas MPI for Gravitational Physics (Albert Einstein Institute) & Institute for Gravitational Physics, "Ultralocality and the robustness of slow contraction to cosmic initial conditions"
Mon, May 3, 2021, 12:30 pm12:30 pm

Abstract: I will discuss the detailed process by which slow contraction smooths and flattens the universe using an improved numerical relativity code that accepts initial conditions with non-perturbative deviations from homogeneity and isotropy along two independent spatial directions. Contrary to common descriptions of the early universe, I…

Biophysics Seminar: Rosalind Allen, Edinburgh University| Geometry of bacterial growth and division| Zoom
Mon, May 3, 2021, 12:15 pm12:15 pm

The rod-shaped bacterium Escherichia coli proliferates by a process of elongation, followed by constriction at its centre to create new cell poles. Despite intense study, some apparently simple questions about the dynamics of growth and division in E. coli continue to be debated - these include whether the cell length increases exponentially or…

Speaker
A free lecture open to the public.
HET Seminar | Lorenz Eberhardt, Member, School of Natural Sciences, IAS | "Worldsheet Correlators in AdS3" | via Zoom
Fri, Apr 30, 2021, 1:45 pm1:45 pm

To connect to the HET Seminar via Zoom, please click the following link:
https://theias.zoom.us/j/96660745132?pwd=Y3FPUWVDZlNwUEdINkxjSnNhK0dpZz09

Abstract: We…

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Gravity Group Seminar | Zach Atkins, "Map-based Noise Simulations for ACT Data" Suren Gourapura, "r Error Budget for SPIDER's First Flight"
Fri, Apr 30, 2021, 12:00 pm12:00 pm
Zachary Atkins, Princeton University "Map-based Noise Simulations for ACT Data"

The next analysis of ACT data will use precision-cosmology-capable maps of the microwave sky based on data taken by the Advanced ACT detector arrays since 2017. The maps will cover the full Advanced ACT footprint (~44% f_sky, see Aiola et al. 2020 and Mallaby…

Condensed Matter Zoom Seminar | Siddharth Parameswaran | "Topology and broken symmetry of excitons in two-dimensional materials"
Wed, Apr 28, 2021, 2:00 pm2:00 pm

I will discuss recent  theoretical work on exciton physics in two-dimensional materials. First, I will focus on the neutral particle-hole pair excitations of correlated “orbital Chern insulators” recently detected in twisted bilayer graphene, whose approximately flat conduction and valence bands have equal and opposite non-zero Chern number…

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HET Seminar | Mina Aganagic, University of California, Berkeley | "Khovanov Homology from Mirror Symmetry" | via Zoom
Mon, Apr 26, 2021, 2:30 pm2:30 pm

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

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PGI Virtual Seminar Series | Elisa Maggio, University of Rome "Testing the nature of dark compact objects with gravitational waves"
Mon, Apr 26, 2021, 12:30 pm12:30 pm

Gravitational waves from the coalescence of compact binaries provide a unique opportunity to test gravity in the strong field regime. In particular, the postmerger phase of the gravitational signal is a proxy for the nature of the remnant. 

This is of particular interest in view of some quantum-gravity models which predict the…

Biophysics Seminar: Julia M. Yeomans, University of Oxford| Active nematic physics in cell layers and tissues| Zoom
Mon, Apr 26, 2021, 12:15 pm12:15 pm

Active materials such as bacteria, molecular motors and eukaryotic cells continuously transform chemical energy taken from their surroundings to mechanical work. Dense active matter shows mesoscale turbulence, the emergence of chaotic flow structures characterised by high vorticity and self-propelled topological defects. I shall describe the…

Speaker
A free lecture open to the public.
HET Seminar | Soumyadeep Chaudhuri, Hebrew University of Jerusalem | "Thermal order in large N conformal gauge theories" | via Zoom
Fri, Apr 23, 2021, 1:45 pm1:45 pm

To join HET Seminar please click link below:

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

Meeting ID: 985 9550 4817

Abstract:

Speaker
Gravity Group Lunch Seminar | Sarah Marie Bruno, "The projected impact of commercial satellite constellations on ground-based astronomy" & Roman Kolevatov, "The DMRadio Experiment at Princeton"
Fri, Apr 23, 2021, 12:00 pm12:00 pm

Sarah Marie Bruno, Princeton University 
"The projected impact of commercial satellite constellations on ground-based astronomy"

The ongoing commercialization of satellite technology is leading to the ubiquity of privately owned and operated satellite spacecraft in low-Earth orbits. These satellites can be used for…

Condensed Matter Zoom Seminar | Ana Maria Rey, U Colorado | "Advances in Quantum Simulation with Planar Ion Crystals"
Wed, Apr 21, 2021, 2:00 pm2:00 pm

 In this seminar I will discuss recent progress on the use of planar crystals with hundreds of ions as a platform for quantum simulation of spin and spin-boson models. The key idea is the use of a pair of lasers to couple two internal levels of the ions, that act as a spin½ degree of freedom, to the…

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