Events Archive

Donald R. Hamilton Colloquium

Hamilton Colloquium Series, Luis Fernando Alday, Oxford University, "Quantum Scattering Amplitudes in AdS/CFT"

Thu, Feb 20, 2020, 4:00 pm

The AdS/CFT correspondence maps correlators of local operators in a conformal field theory to scattering amplitudes in a gravitational/string theory on curved space-time. The study of such amplitudes is incredibly hard and has mostly been done in a certain classical limit. We show how modern analytic bootstrap techniques allow us to go much...

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

Hamilton Colloquium Series, Ricard Alert, Princeton University, "The Physics of Collective Cell Migration"

Thu, Feb 13, 2020, 4:00 pm

Cells in our body move in groups during development, wound healing, and tumor spreading. Bacterial cells also coordinate their motion to aggregate into biofilms, to feed cooperatively, and to form fruiting bodies.

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

Hamilton Colloquium Series, Thierry Mora,Ecole Normale Supérieure de Paris, "Diversity and Memory in Self-Organised Immune Repertoires"

Thu, Dec 12, 2019, 4:00 pm

The immune system is composed of a large number of heterogenous interacting components that collectively recognize and clear pathogens.

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

Hamilton Colloquium Series, Steve Cowley, Princeton Plasma Physics Laboratory, "Driving Down the Cost of Fusion Power Through Technical Innovation"

Thu, Dec 5, 2019, 4:00 pm

The National Academy has recently called for the US to adopt a strategy to produce fusion electricity from a compact pilot plant by mid-century. This approach requires innovations in technology (e.g. magnet systems and power handling systems) and innovations in physics.

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

Hamilton Colloquium Series, Michal Lipson, Columbia University, "The Revolution of Silicon Photonics" Jadwin A-10

Thu, Nov 21, 2019, 4:00 pm

We are now experiencing a revolution in optical technologies, where one can print and control massive optical circuits, on a microelectronic chip. This revolution is enabling a whole range of applications that are in need for scalable optical technologies and it is opening the door to areas that only a decade ago were unimaginable.

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

Hamilton Colloquium Series, Michelle Simmons, University of New South Wales, Australia, "Atomic Qubits in Silicon"

Thu, Nov 14, 2019, 4:00 pm

Building a quantum computer in the highly manufacturable material silicon offers many advantages. Phosphorus atom qubits in silicon in particular have demonstrated extremely long (up to 35 s) coherence times with >99.9% fidelity.

Audience: A free lecture open to the public.

Hamilton Colloquium Series, Sheperd S. Doeleman, Center for Astrophysics | Harvard & Smithsonian, "The Event Horizon Telescope: Imaging a Black Hole"

Thu, Nov 7, 2019, 4:00 pm

The Event Horizon Telescope (EHT) is a Very Long Baseline Interferometry (VLBI) array operating at the shortest possible wavelengths, which can resolve the event horizons of the nearest supermassive black holes.

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

Hamilton Colloquium Series, Allan H. MacDonald, University of Texas at Austin, "Magic Angle Twisted Bilayer Graphene" Jadwin A10

Thu, Oct 3, 2019, 4:00 pm

Moiré patterns are ubiquitous in layered van der Waals materials and can now be fabricated with considerable control by combining mechanical exfoliation of van der Waals layers with tear and stack device fabrication techniques.  I will explain why the electronic and optical properties of two-dimensional semiconductors and semimetals are...

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

Hamilton Colloquium Series, Adam Burrows, Princeton University, "Supernova Explosion Simulations in Three Dimensions" Jadwin A10

Thu, Sep 26, 2019, 4:00 pm

Using our state-of-the-art code Fornax we have simulated the collapse and explosion of the cores of many massive-star models in three spatial dimensions.

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

Hamilton Colloquium Series, Gerard 't Hooft, Utrecht University, "The Quantum Black Hole: How Exotic Physics May Enter"

Thu, Sep 19, 2019, 4:00 pm

Quantising a black hole can be done starting with conventional physics. We just assume matter to keep the form of point particles until they come close to the horizon. The gravitational back reaction of these particles generates a novel relation between particles going in and particles going out, enabling us to transform in-going particles into...

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

Hamilton Colloquium Series, Silviu Pufu, Princeton University "Conformal Field Theory: From Boiling Water to Quantum Gravity"

Thu, Sep 12, 2019, 4:00 pm

Conformal Field Theory (CFT) is a framework used to describe physical systems with no intrinsic length or energy scales.  CFTs have wide applicability across theoretical physics, ranging from critical points in the phase diagrams of water or magnetic materials to the low-energy dynamics of extended objects in string theory.

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

Hamilton Colloquium Series, Lawrence Sulak, Boston University, “Discovering the Electro-Weak Force, Seeing a Supernova Explode, Peering Inside the Sun, & Watching Neutrinos Oscillate”

Thu, May 2, 2019, 4:00 pm

Cosmological hypotheses and oracular dreams of grandly unifying all the forces of nature foretold: neutrinos might weigh a tiny bit, those elusive particles might blow up stars, and the protons (and your ashes) would transform into light in 1029 years.  Indeed, that man can live to 100, without the radioactivity in his bones killing him, proves...

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

Hamilton Colloquium Series, Pupa Gilbert, University of Wisconsin-Madison,"How Organisms Build Crystals"

Thu, Apr 18, 2019, 4:00 pm

Crystalline biominerals cost energy but provide the diverse organism making them with scaffolding, shielding, locomotion, mastication, gravity and magnetic field sensing, etc.

Audience: A free lecture open to the public.

Hamilton Colloquium Series, Hirosi Ooguri, Caltech, "Constraints on Quantum Gravity"

Thu, Apr 11, 2019, 4:00 pm

Superstring theory is our best candidate for the ultimate unification of general relativity and quantum mechanics. Although predictions of the theory are typically at extremely high energy and out of reach of current experiments and observations, several non-trivial constraints on its low energy effective theory have been found.

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

Hamilton Colloquium Series: Marta Volonteri, IAP, "Massive Black Hole Binaries in the Cosmos" Jadwin A10

Thu, Apr 4, 2019, 4:00 pm to 5:00 pm

Massive black holes weighing from a few tens of thousands to tens of billions of solar masses inhabit the centers of today’s galaxies, including our own Milky Way. Massive black holes also shone as quasars in the past, with the earliest detected a mere billion years after the Big Bang.

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

Hamilton Colloquium Series, Shinsei Ryu, University of Chicago, "Topology, Entanglement, and Time-Reversal Symmetry in Quantum Many-Body Physics"

Thu, Mar 14, 2019, 4:00 pm

Time-reversal symmetry is one of fundamental symmetries that can present in many quantum mechanical systems. It plays an important role in many-body quantum systems, as demonstrated, for example, in the physics of topological insulators. In this talk, I will discuss topology and quantum entanglement protected and detected by time-reversal...

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

Hamilton Colloquium Series: Anthony Leggett, University of Illinois, "Why I don't believe that Quantum Mechanics is the Whole Truth", Jadwin A10

Thu, Feb 28, 2019, 4:00 pm

Not long after the birth of quantum mechanics nearly a century ago, Erwin Schroedinger pointed out, in his famous "Cat" paper, the difficulty which arises if we assume that the theory gives a complete account of the world up to and including our observations of it.

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

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):

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):

Hamilton Colloquium Series: Daniel Segre, Boston University, "Metabolic Networks from Genomes to Ecosystems" Jadwin A10

Thu, Dec 13, 2018, 4:30 pm

Microbial ecosystems and their metabolic activity play a fundamental but poorly understood role at multiple scales, from human health to biogeochemical cycles. In fact, metabolism, in addition to being the “engine” of every living cell, mediates competition and cross-feeding between different species, and dictates how cells interact with their...

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

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