Events Archive

2019

HET Seminar at IAS | Michael Levin, University of Chicago | "Bridging the gap between lattice models and TQFT"

Fri, Feb 22, 2019, 1:45 pm

Every (2+1) dimensional lattice model with an energy gap is believed to be described by a topological quantum field theory (TQFT) in the low energy, long wavelength limit. What this means concretely is that every lattice model of this kind is associated with a collection of universal topological data that defines the corresponding TQFT.

Speaker(s):

Gravity Group Lunch Seminar, Steve Benton | Princeton "Spider, SuperBIT, Taurus, and Cosmology from the Stratosphere"

Fri, Feb 22, 2019, 12:00 pm

As cosmological measurements increase in precision, foregrounds are increasingly problematic. One foreground that's possible to reduce is Earth's atmosphere. I will talk about experiments that use stratospheric balloons to achieve higher sensitivity and lower systematic errors than are possible on the ground, and at much lower cost than in...

Hamilton Colloquium Series: Lenka Zdeborová, Institute of Theoretical Physics in CEA Saclay, France, "Statistical Physics of Computational Problems" Jadwin A10

Thu, Feb 21, 2019, 4:00 pm to 5:00 pm

What are the problems we can solve using a computer? is one of the very fundamental question in science. We will describe how do we use statistical physics to address this question. We will discuss what insights does physics bring to the field of algorithmic hardness and how is this insight used to develop better algorithms.

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

CANCELED | Physics Group Meeting at IAS | Ken Van Tilburg, Member, School of Natural Sciences, IAS; NYU | "Formation of compact structures with axion dark matter"

Wed, Feb 20, 2019, 1:45 pm

Light scalar dark matter fields can exhibit several interesting aspects to their cosmological evolution. I will focus mostly on structure formation with ultralight axions and with the QCD axion. The standard scenario leads to a suppression of structure on small scales.

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These Vibes are Too Cosmic - 103.3FM

Dark Matter Strikes Back at the Galactic Center - Rebecca Leane, MIT -303 Jadwin

Tue, Feb 19, 2019, 4:00 pm

Abstract: The Galactic Center GeV Excess (GCE) is firmly detected. While there is statistical evidence suggesting the excess originates largely from point sources, its interpretation as a signal of annihilating dark matter has not been conclusively ruled out.

Speaker(s):

How to strengthen physics by making it inclusive; Chandralekha Singh, University of Pittsburgh

Tue, Feb 19, 2019, 3:00 pm

The field of physics has historically lacked diversity, and efforts to make it inclusive have been limited in their success. Despite some efforts to encourage women to pursue a career in physics, the percentage of women majoring in physics remains low.

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HET Seminar | Matthijs Hogervorst, Perimeter Institute | "Hamiltonian truncation and the S^3 partition function"

Mon, Feb 18, 2019, 2:30 pm

In this talk I discuss Hamiltonian truncation, a toolkit to construct quantum field theories. Hamiltonian truncation is in many ways orthogonal to the more familiar lattice regularization, and it can be used to systematically compute QFT observables with little computational effort.

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Biophysics Seminar: Valentina Emiliani “Toward circuits optogenetics”| Photonics Department, Institute de la Vision, Sorbonne University| Joseph Henry Room

Mon, Feb 18, 2019, 12:00 pm

Toward circuits optogenetics

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

Gravity Group Lunch Seminar, Susan Clark | IAS "The magnetic interstellar medium and the polarized dust foreground"

Fri, Feb 15, 2019, 12:00 pm

The interstellar medium (ISM) is multi-phase, turbulent, and magnetic. This makes the ISM an ideal laboratory for studying the multi-scale physics of star formation and galactic evolution.

Title: Physics on Pointe - Merritt Moore - Taplin Auditorium

Thu, Feb 14, 2019, 8:00 pm

Abstract: Merritt Moore will discuss her journey as a physicist and professional ballet dancer.

These Vibes are Too Cosmic - 103.3FM

The classification of geodesically convex trace functions with applications to the theory of multivariate operator means and quantum physics - Frank Hansen, Tohoku University, 343 Jadwin

Tue, Feb 12, 2019, 4:30 pm

Abstract: We consider trace functions generated by the functional calculus of a real function and obtain a complete characterization of the class of geodesically convex trace functions of this form. We then apply these results to the theory of multivariate operator means.

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First observation of coherent elastic neutrino-nucleus scattering and its reach as a new tool for nuclear and particle physics - Grayson Rich - 303 Jadwin

Efficient Simulation of the Dynamics in Quantum Many-Body Systems - Frank Pollmann - TUM - PCTS

Biophysics Seminar: Eleni Katifori, University of Pennsylvania “Pattern formation and self-organization in biological flows”| Joseph Henry Room

Mon, Feb 11, 2019, 12:00 pm

Pattern formation and self-organization in biological flows

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

HET Seminar at IAS | Subir Sachdev, Harvard University | “Gauge theories for the cuprates near optimal doping”

Fri, Feb 8, 2019, 1:45 pm

Many experiments point to a significant transformation in the electronic state of the cuprate superconductors as their density is varied at very low temperature. The critical density is close to the optimal density where the superconductivity is present at the highest temperature.

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Gravity Group Lunch Seminar, Jean-Loup Puget, IAS (Orsay) and ENS (Paris) "Planck 2018"

Fri, Feb 8, 2019, 12:00 pm

The Planck collaboration is in the process of delivering the "Planck results 2018" papers and data. The improvement of the map making will be described together with a new set of maps with some improvements for polarization at large scales.

Hamilton Colloquium Series: Bonnie Fleming, Yale University,“Nu Measurements, New Physics: Short and Long Baseline Neutrino Experiments at Fermilab”, Jadwin A10

Thu, Feb 7, 2019, 4:00 pm

From "desperate remedies" to "missing energy", the three neutrinos, the tiniest building blocks of matter, have been elusive for most of their known lives.  Only in the last 20 years have we convinced ourselves that neutrinos, like the other building blocks of matter, have mass.

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

FPO - Jiming Sun - "High Pressure Superionic Ice Phase Diagram"

Thu, Feb 7, 2019, 1:00 pm

Water is one of the most common substances in the universe and is found in many different phases.

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