Events Archive

Events Archive

PGI Spring Seminar Series|Helvi Witek|University of Illinois at Urbana-Champaign|" The Adventures of Black Holes: the Case of Quadratic Gravity"|

IAS HET Seminar | Giulio Salvatori, Member, School of Natural Sciences, IAS| “Scattering Amplitudes, Positive Geometries and Surfaces” | Wolfensohn Hall (behind Bloomberg Hall) & on Zoom

IAS HET Seminar | Giulio Salvatori, Member, School of Natural Sciences, IAS| “Scattering Amplitudes, Positive Geometries and Surfaces” | Wolfensohn Hall (behind Bloomberg Hall) & on Zoom
Fri, Mar 11, 2022, 1:45 pm

In recent years we have witnessed the emergence of a novel description for the physics of scattering amplitudes at the heart of which are mathematical structures called Positive Geometries, which loosely speaking are generalizations of polytopes having the crucial feature of encoding in their boundaries the singularity structure of...

Speaker(s):
Giulio Salvatori
School of Natural Sciences, IAS
Scattering Amplitudes, Positive Geometries and Surfaces

PCTS-New Era of Two-dimensional Quantum Matter

PCTS-New Era of Two-dimensional Quantum Matter
Fri, Mar 11, 2022, 9:05 am

In person registration is full and is now closed.  Please register to receive the Zoom link, which will be emailed on Monday, March 7.

 

Organizers: B. Andrei Bernevig, Vir Bulchandani, Biao Lian, Frank Schindler, Sanfeng Wu, Ali Yazdani

PCTS-New Era of Two-dimensional Quantum Matter

PCTS-New Era of Two-dimensional Quantum Matter
Thu, Mar 10, 2022, 9:05 am

In person registration is full and is now closed.  Please register to receive the Zoom link, which will be emailed on Monday, March 7.

 

Organizers: B. Andrei Bernevig, Vir Bulchandani, Biao Lian, Frank Schindler, Sanfeng Wu, Ali Yazdani

PCTS-New Era of Two-dimensional Quantum Matter

PCTS-New Era of Two-dimensional Quantum Matter
Wed, Mar 9, 2022, 9:05 am

In person registration is full and is now closed.  Please register to receive the Zoom link, which will be emailed on Monday, March 7.

 

Organizers: B. Andrei Bernevig, Vir Bulchandani, Biao Lian, Frank Schindler, Sanfeng Wu, Ali Yazdani

PCTS-New Era of Two-dimensional Quantum Matter

PCTS-New Era of Two-dimensional Quantum Matter
Tue, Mar 8, 2022, 9:05 am

In person registration is full and is now closed.  Please register to receive the Zoom link, which will be emailed on Monday, March 7.

 

Organizers: B. Andrei Bernevig, Vir Bulchandani, Biao Lian, Frank Schindler, Sanfeng Wu, Ali Yazdani

EDI seminar: "Half the Sky: Gender Equity, Solidarity, and Support for Women in STEM"

EDI seminar: "Half the Sky: Gender Equity, Solidarity, and Support for Women in STEM"
Mon, Mar 7, 2022, 3:00 pm

Women are 51% of the population and, in Mao Zedong's timeless words, "hold up half the sky." In the context of astrophysics, science, and STEM, why are women
glaringly absent from studies of the sky, and what can we do as colleagues, researchers, and everyday allies to increase their representation and support their

Speaker(s):
Dr. Taharee A. Jackson
DrTaharee Consulting
"Half the Sky: Gender Equity, Solidarity, and Support for Women in STEM"

Atoms Interlinked by Light: Programmable Interactions and Emergent Geometry

Atoms Interlinked by Light: Programmable Interactions and Emergent Geometry
Mon, Mar 7, 2022, 12:30 am

The graph of interactions in a quantum many-body system is crucial for governing the flow of information and the structure of correlations.  We engineer programmable nonlocal interactions in an array of atomic ensembles within an optical resonator, where photons convey information between distant atomic spins.  In our system of spin-1 atoms,...

Speaker(s):
Monika Schleier-Smith
Stanford

Using Kekule patterns to detect symmetry-breaking ground states of twisted bilayer graphene

Using Kekule patterns to detect symmetry-breaking ground states of twisted bilayer graphene
Fri, Mar 4, 2022, 2:00 pm

Magic angle twisted bilayer graphene (MATBG) has been shown to host a variety of correlated insulator states at integer fillings. These correlated insulator states are believed to arise from symmetry breaking within the flatband manifold arising from spin, valley, and band degrees of freedom.

Speaker(s):
Tomo Soejima
UC Berkeley

Biophysics Seminar: Madhav Mani, Northwestern University| A Statistical (Physics) view of Organismal Development

Biophysics Seminar: Madhav Mani, Northwestern University| A Statistical (Physics) view of Organismal Development
Mon, Feb 28, 2022, 12:30 pm

After a century of biochemical and genetic onslaught on the embryo we are left with an inexhaustive parts list with an increasingly baroque logic. How do we begin to assemble complex living systems from knowledge of the parts list?

Audience: A free lecture open to the public.
Speaker(s):
Northwestern University

PGI Spring Seminar Series|Edgar Shaghoulian|University of Pennsylvania|"Applications of the Gravitational Path Integral to Black Holes and Cosmology"

PGI Spring Seminar Series|Edgar Shaghoulian|University of Pennsylvania|"Applications of the Gravitational Path Integral to Black Holes and Cosmology"
Mon, Feb 28, 2022, 12:30 pm

I will introduce the gravitational path integral and discuss some of its modern applications. Our first application will be to the black hole information paradox, where we will see that nontrivial gravitational saddles are important in exhibiting unitarity of black hole evaporation.

IAS HET Seminar | Salvatore Torquato, Princeton University; Member, School of Natural Sciences, IAS | "Hyperuniformity in Classical and Quantum States of Matter" | Wolfensohn Hall (behind Bloomberg Hall) & on Zoom

IAS HET Seminar | Salvatore Torquato, Princeton University; Member, School of Natural Sciences, IAS | "Hyperuniformity in Classical and Quantum States of Matter" | Wolfensohn Hall (behind Bloomberg Hall) & on Zoom
Fri, Feb 25, 2022, 1:45 pm

The study of hyperuniform states of matter is an emerging multidisciplinary field, influencing and linking developments across the physical sciences, mathematics and biology.

Speaker(s):
Salvatore Torquato
Princeton University
Hyperuniformity in Classical and Quantum States of Matter

Laser cooling of polyatomic molecules

Laser cooling of polyatomic molecules
Fri, Feb 25, 2022, 1:00 pm

Molecules are cool. They can be used to generate robust qubits, build quantum simulators, test fundamental physics, study quantum chemistry and are the building blocks of life.

Speaker(s):
Dr. Debayan Mitra
Columbia University
Laser cooling of polyatomic molecules

FPO | Xinwei Yu | "The computational tools for whole-brain imaging and the neural dynamics of behaviors in C. elegans" | Chair's Conference Room, 202 @ 2pm

FPO | Xinwei Yu | "The computational tools for whole-brain imaging and the neural dynamics of behaviors in C. elegans" | Chair's Conference Room, 202 @ 2pm
Tue, Feb 22, 2022, 2:00 pm

Abstract: Advances in optical neural imaging provide an opportunity to record panneuronal neural activity and behavior simultaneously. With a compact nervous system, the transparent nematode Caenorhabditis elegans is a good candidate for whole-brain imaging and investigating the neural representation of behaviors.

Speaker(s):
Xinwei Yu
“The computational tools for whole-brain imaging and the neural dynamics of behaviors in C. elegans”

HET Seminar | Beatrix Muhlmann, McGill University | “The semiclassical gravitational path integral and random matrices” | Via Zoom

HET Seminar | Beatrix Muhlmann, McGill University | “The semiclassical gravitational path integral and random matrices” | Via Zoom
Mon, Feb 21, 2022, 2:30 pm

According to Gibbons and Hawking the entropy of a dS universe is encoded in the Euclidean gravitational path integral over compact manifolds with dominant sphere saddle. In this talk I will report on recent work in which we explicitly calculate this gravitational path integral in two spacetime dimensions.

Speaker(s):
Beatrix Muhlmann
McGill University
The semiclassical gravitational path integral and random matrices

PGI Spring Seminar|J. (Jácome) Armas|University of Amsterdam|"A Stable and Causal Model of Magnetohydrodynamics"

HET Seminar |Justin Kaidi , Stony Brook University | “Kramers-Wannier-like duality defects in (3+1)d gauge theories” | Via Zoom

HET Seminar |Justin Kaidi , Stony Brook University | “Kramers-Wannier-like duality defects in (3+1)d gauge theories” | Via Zoom
Fri, Feb 18, 2022, 1:45 pm

I will introduce a class of non-invertible topological defects in (3+1)d gauge theories whose fusion rules are the higher-dimensional analogs of those of the Kramers-Wannier defect in the (1+1)d critical Ising model.

Speaker(s):
Justin Kaidi
Stony Brook University
Kramers-Wannier-like duality defects in (3+1)d gauge theories

Hamilton Colloquium Series, Dmitry Abanin, University of Geneva, "Non-equilibrium matter through the prism of quantum entanglement"

Hamilton Colloquium Series, Dmitry Abanin, University of Geneva, "Non-equilibrium matter through the prism of quantum entanglement"
Thu, Feb 17, 2022, 4:00 pm

Remarkable experimental advances enabled creation of  highly tunable and controllable quantum systems of ultracold atoms, trapped ions, and superconducting quantum bits.

Speaker(s):
Dmitry Abanin
University of Geneva
Non-equilibrium matter through the prism of quantum entanglement

HET Seminar | Sabrina Gonzalez Pasterski, Princeton University | “The Celestial Almanac” | PCTS (Room 407) & Zoom

HET Seminar | Sabrina Gonzalez Pasterski, Princeton University | “The Celestial Almanac” | PCTS (Room 407) & Zoom
Mon, Feb 14, 2022, 2:30 pm

We start by revisiting the task of constructing a holographic dual to quantum gravity in asymptotically flat spacetimes. Upon recasting the S-matrix in terms of data at the conformal boundary, we see that the two standard approaches amount to slicing up the bulk and boundary in different ways.

Speaker(s):
Sabrina Gonzalez Pasterski
Princeton University
The Celestial Almanac

PGI Spring Seminar| Sarah Vigeland |University of Wisconsin-Milwaukee|"Supermassive Black Holes and Merging Galaxies: Low-Frequency Gravitational Wave Detection with Pulsar Timing Arrays"

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