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Lectures Events

Spring 2022

Manifesting the Imprints of Elastic and Exothermic Scatterings Among Dark Matter Particles in Astrophysical/Cosmological Observations
January 19, 2022 4:00 pm – 5:00 pm (CDT)
Manifesting the Imprints of Elastic and Exothermic Scatterings Among Dark Matter Particles in Astrophysical/Cosmological Observations

Speaker: Heejung Kim (Institute for Basic Science)Host: Doojin Kim

In this talk, I will give an overview of how elastic and exothermic scatterings among dark matter particles give rise to distinctive features in late-time structure formation. I will explain how astrophysical observations on the structures of galaxies can probe such unique features, and discuss how the observations can help [...]
Science Diplomacy in the World Today
January 19, 2022 3:30 pm – 5:00 pm (CDT) Hawking Auditorium
Science Diplomacy in the World Today

Speaker: Luiz Davidovich (Atomic & Molecular University )

The Chancellor Sharp Distinguished lecture series in conjunction with IQSE and the Hagler Institute Presents Luiz Davidovich. Event Details: Jan 19, 2022 3:30 - 4:00 PM Reception, 1st floor MIST 4:00 - 5:00 PM at Hawking Auditorium
POSTPONED
January 20, 2022 4:00 pm – 5:00 pm (CDT) Hawking Auditorium
POSTPONED

Speaker: Roya Zandi (University of California, Riverside)

January 21, 2022 4:00 pm – 5:00 pm (CDT) MIST M102
OPEN

Speaker: TBA

Pathways to Discovery in Astronomy and Astrophysics in the 2020's
January 24, 2022 11:30 am (CDT) Hawking Auditorium
Pathways to Discovery in Astronomy and Astrophysics in the 2020’s

Speaker: Rob Kennicutt (Texas A&M University)Host: Stephanie Ho

Recently the National Academy of Sciences completed a comprehensive decadal survey of research opportunities, strategic opportunities, and the state of the profession in astronomy and astrophysics.  The survey involved more than 130 members of the survey committee and its 13 sub-panels, and was informed by more than 860 white papers [...]
Automorphic Spectra and the Conformal Bootstrap
January 24, 2022 2:00 pm – 3:00 pm (CDT) MIST M108
Automorphic Spectra and the Conformal Bootstrap

Speaker: Sridip Pal (Institute for Advanced Study)Host: Anindya Sengupta

We point out that the spectral geometry of hyperbolic manifolds provides a remarkably precise model of the modern conformal bootstrap. As an application, we use conformal bootstrap techniques to derive rigorous computer-assisted upper bounds on the lowest positive eigenvalue **\lambda_1(X)** of the Laplace-Beltrami operator on closed hyperbolic surfaces and 2-orbifolds [...]
The Geometric SMEFT Description of Curved Higgs Field Space(s)
January 26, 2022 4:00 pm (CDT) Hawking Auditorium
The Geometric SMEFT Description of Curved Higgs Field Space(s)

Speaker: Mike Trott (Niels Bohr Institute)Host: Doojin Kim

In recent years, the effective field theory approach to the Standard Model, the SMEFT, has been used to study LHC data with ever increasing theoretical precision and sophistication. However, the complexity of this theory lead to several barriers  to substantial theoretical progress. In particular, the explosion in the number of parameters in the SMEFT as [...]
January 28, 2022 4:00 pm – 5:00 pm (CDT) MIST M102
OPEN

Speaker: TBA

Symmetries and Anomalies at the IR Fixed Point of Gravity
January 31, 2022 2:00 pm – 3:00 pm (CDT)
Symmetries and Anomalies at the IR Fixed Point of Gravity

Speaker: Kurt Hinterbichler (Case Western Reserve University)Host: Daniel Butter

I will discuss symmetries that arise at the infrared fixed point of the RG flow of Einstein gravity, including conformal vs. scale invariance in various dimensions, as well as 1-form generalized global symmetries and new anomalies that arise among them.
Exploding Stars and Catastrophic Collisions
January 31, 2022 11:30 am – 12:30 pm (CDT)
Exploding Stars and Catastrophic Collisions

Speaker: Kate Maguire (Trinity College Dublin)Host: Stephanie Ho

Supernovae (and stellar collisions) are the incredibly luminous (and not so luminous) deaths of stars that play a vital role in chemical enrichment, galaxy feedback mechanisms, and our understanding of stellar evolution. In particular, Type Ia supernovae, the explosions of white dwarfs in binary systems, are vital for constraining the [...]
February 4, 2022 4:00 pm – 5:00 pm (CDT) MIST M102
OPEN

Speaker: TBA

(NEW DATE!) Ultracoherent nanomechanical resonators for quantum experiments and precision measurement
February 4, 2022 4:00 pm – 5:00 pm (CDT) Hawking Auditorium
(NEW DATE!) Ultracoherent nanomechanical resonators for quantum experiments and precision measurement

Speaker: Dalziel Wilson (University of Arizona)Host: Alexei Akimov

Nanomechanical resonators are exquisite force sensors and have recently been probed at the quantum limit using optical cavities. I’ll give a basic introduction to optomechanical force sensing and describe a new class of ultra-low-loss nanomechanical resonators that have given access to its Standard Quantum Limit. I'll focus in particular on [...]
Aspects of the Black Hole/String Transition
February 7, 2022 2:00 pm – 3:00 pm (CDT) MIST M102
Aspects of the Black Hole/String Transition

Speaker: Yiming Chen (Princeton University)Host: Haoyu Zhang

It has long been speculated that a black hole in string theory turns into highly excited strings close to the Hagedorn temperature. Gravitational attraction pulls different parts of the string together, forming a star-like configuration. In this talk, I will review the properties of a concrete solution of this kind, [...]
The Universe from the Edge of the Dark Matter Halo
February 7, 2022 11:30 am – 12:30 pm (CDT)
The Universe from the Edge of the Dark Matter Halo

Speaker: Susmita Adhikari (University of Chicago)Host: Stephanie Ho

Understanding the formation and evolution of non-linear structure in the universe can shed light on some of the most fundamental questions in Cosmology.  The splashback radius has emerged as probe of physics in the interface of galaxy formation and Cosmology. It forms the edge of the orbiting region of a [...]
Physical nature of information
February 10, 2022 4:00 pm – 5:00 pm (CDT) Hawking Auditorium
Physical nature of information

Speaker: Gregory Falkovich (Weizmann Institute)Host: Alexander Finkelstein

This is a a blackboard-chalk lecture on a quite elementary subject: how the second law of thermodynamics is getting trivial from the viewpoint of information theory.  It gives a panoramic overview of the applications of statistical physics / information theory, from bioinformatics to self-driving cars and turbulence theory. And a [...]
Viscous electronics.
February 11, 2022 4:00 pm – 5:00 pm (CDT) MIST M102
Viscous electronics.

Speaker: Gregory Falkovich (Weizmann)Host: A. Finkelstein

Abstract: Quantum-critical strongly correlated systems feature universal collision-dominated collective transport. Viscous electronics is an emerging field dealing with systems in which strongly interacting electrons flow like a fluid. Such flows have some remarkable properties never seen before. I shall describe some recent theoretical and experimental works devoted, in particular, to [...]
Strong Cosmic Censorship Versus Λ
February 14, 2022 2:00 pm – 3:00 pm (CDT) MIST M102
Strong Cosmic Censorship Versus Λ

Speaker: Mihalis Dafermos (University of Cambridge & Princeton University)Host: Christopher Pope

The strong cosmic censorship conjecture is a fundamental open problem in classical general relativity, first put forth by Roger Penrose in the early 70s. This is essentially the question of whether general relativity is a deterministic theory. Perhaps the most exciting arena where the validity of the conjecture is challenged [...]
February 18, 2022 4:00 pm – 5:00 pm (CDT) MIST M102
OPEN

Speaker: TBA

Spectroscopic Vision: Tracing the Formation and Evolution of Massive Galaxies Through Cosmic Time
February 21, 2022 11:30 am (CDT) MIST M102
Spectroscopic Vision: Tracing the Formation and Evolution of Massive Galaxies Through Cosmic Time

Speaker: Rachel Bezanson (University of Pittsburgh)Host: Jonelle Walsh

Massive galaxies, though relatively rare in number, host most of the stars in the Universe and deep in their cores harbor the most extreme supermassive black holes. Today massive galaxies are red and dead ellipticals with little ongoing star formation or organized rotation; naturally they were expected to be relics [...]
Bootstrap of the KLT Double-Copy
February 21, 2022 2:00 pm – 3:00 pm (CDT)
Bootstrap of the KLT Double-Copy

Speaker: Henriette Elvang (University of Michigan)Host: Christopher Pope

In field theory, the "double copy" can be thought of as a multiplicative map between tree amplitudes of two field theories into tree amplitudes of another theory. The origin of the map is string theory, but from a bottom-up Effective Field Theory approach, a natural question is if there exists other [...]
CANCELED
February 25, 2022 4:00 pm – 5:00 pm (CDT) MIST M102
CANCELED

Speaker: Vedika Khemani (Stanford)

Emergent Cosmology from Matrix Theory
February 28, 2022 2:00 pm – 3:00 pm (CDT)
Emergent Cosmology from Matrix Theory

Speaker: Robert Brandenberger (McGill University)Host: Ergin Sezgin/Ali Kaya

I will argue that standard Effective Field Theory techniques are inapplicable to describe the very early universe, and that we hence need to turn to a non-perturbative approach. The BFSS (Banks, Fischler, Shenker and Susskind) matrix model is a proposed non-perturbative definition of superstring theory. It is a quantum mechanical [...]
Do Some SMBH in Nearby Galaxies Come in Pairs? - An Observer's Tale
February 28, 2022 11:30 am – 12:30 pm (CDT)
Do Some SMBH in Nearby Galaxies Come in Pairs? – An Observer’s Tale

Speaker: Sabine Thater (University of Vienna)Host: Jonelle Walsh

The formation of supermassive black holes (MBH) is thought to be tightly linked to the formation and growth of their host galaxies. While it is difficult to infer information about MBHs, galaxy evolution often leaves an imprint on the host galaxy properties. One of those properties is that the most [...]
Lessons on Galaxy Transformations from Gaia
March 3, 2022 4:00 pm – 5:00 pm (CDT) Hawking Auditorium
Lessons on Galaxy Transformations from Gaia

Speaker: Vasily Belokurov (Cambridge University)Host: Louis Strigari

With its most recent data releases, European Space Agency’s Gaia mission revealed the fossilised record of a dramatic - and long suspected - accretion event in the distant past of our Galaxy. This head-on collision with a massive dwarf galaxy was a turning point in the evolution of the Milky [...]
Limit shape phase transitions
March 4, 2022 4:00 pm – 5:00 pm (CDT) MIST M102
Limit shape phase transitions

Speaker: Alexander Abanov (Stony Brook)Host: Ar. Abanov

A limit shape phenomenon in statistical mechanics is the appearance of a most probable macroscopic state. This state is usually characterized by a well-defined boundary separating frozen and liquid spatial regions. The earliest studies related to this phenomenon in crystal shapes are in works by Pokrovsky and Talapov. We will [...]
Hidden Symmetries and Static Response of Black Holes
March 7, 2022 2:00 pm – 3:00 pm (CDT) MIST M102
Hidden Symmetries and Static Response of Black Holes

Speaker: Riccardo Penco (Carnegie Mellon University)Host: Christopher Pope

Black holes in 4D General Relativity have the remarkable property that they lack any form of static linear response. At length scales much larger than the Schwarzschild radius, where black holes can be described as point particles, their linear response is captured by an infinite number of Wilson coefficients in [...]
Double Neutron Star Origins: Towards Multiscale Multiphysics Modeling for a Multimessenger Puzzle
March 7, 2022 11:30 am – 12:30 pm (CDT) Hawking Auditorium
Double Neutron Star Origins: Towards Multiscale Multiphysics Modeling for a Multimessenger Puzzle

Speaker: Miguel Holgado (Carnegie Mellon University )Host: Jonelle Walsh

Gravitational-wave observations of merging black holes and merging neutron stars have significantly impacted our understanding of the formation and evolution of compact-object binaries. One of the most pressing uncertainties in how double neutron stars form is the common-envelope phase, whereby a neutron star inspirals within the envelope of a massive [...]
Cosmic Reionization
March 8, 2022 4:00 pm – 5:00 pm (CDT) Hawking Auditorium
Cosmic Reionization

Speaker: Sultan Hassan (Flatiron Institute)Host: Lucas Macri

Reionization marks the last major global transition of the Universe, during which the birth of the first luminous cosmic structures gradually reionized the inter-galactic medium. Several observational efforts are devoted to detecting and constraining reionization on small and large scales. In this talk, I will discuss the key questions about [...]
From Mini to Micro: Zooming in on New Physics Interpretations of the MiniBooNE Excess at the MicroBooNE Experiment
March 9, 2022 4:00 pm – 5:00 pm (CDT) Hawking Auditorium
From Mini to Micro: Zooming in on New Physics Interpretations of the MiniBooNE Excess at the MicroBooNE Experiment

Speaker: Matheus Hostert (Perimeter Institute & University of Minnesota)Host: Doojin Kim

The MicroBooNE experiment has recently tested a few interpretations of the MiniBooNE excess. I will discuss the impact of MicroBooNE's searches on new physics models and show that it still does not provide a definitive test of the MiniBooNE anomaly. I will also discuss the broader landscape of models with MeV [...]
Extracting all Information from Future Surveys
March 9, 2022 11:30 am – 12:30 pm (CDT) MIST M102
Extracting all Information from Future Surveys

Speaker: Sultan Hassan (Flatiron Institute)Host: Lucas Macri

Extracting the maximum amount of astrophysical and cosmological information remains a challenge in the current and future reionization surveys. These include, for instance, the recently launched NASA’s James Webb Space Telescope (JWST), the Euclid, the Spectro-Photometer for the History of the Universe, Epoch of Reionization, and Ices Explorer (SPHEREx), the [...]

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