Search for tag: "physics colloquium"

John E. Thomas - Optically-Trapped Interacting Fermi Gases

Optically-trapped, ultra-cold gases of spin ½-up and spin ½-down 6Li atoms enable “designer” interactions, offering a versatile environment for simulating exotic quantum…

From  Katie Gentilello on September 17th, 2021 1 plays 0  

Daniel Arovas - Quantum Magnetism from the Iron Age to Today

The quantum theory of magnetism has provided many durable paradigms for quantum phases of matter, including intrinsically quantum disordered states, symmetry-protected topological phases, and quantum…

From  Katie Gentilello on April 22nd, 2021 5 plays 0  

Andrea J. Liu - How materials can learn to function

How does learning occur? In the context of neural networks, learning occurs via optimization, where a loss function is minimized to achieve the desired result. But physical networks such as…

From  Katie Gentilello on April 8th, 2021 3 plays 0  

Ruth Murray-Clay - Origins of Structure in Inner Planetary System

Why do many stars host close-in chains of super-Earths? Why are eccentric gas giants found in some inner planetary systems? What determines which of these outcomes will occur around a particular…

From  Katie Gentilello on March 11th, 2021 2 plays 0  

Michael P. Brenner - Machine Learning for Partial Differential Equations

When Newton's laws are applied in every point in space we arrive at a set of nonlinear partial differential equations describing the world. We often marvel at the complexity of the solutions,…

From  Katie Gentilello on November 30th, 2020 27 plays 0  

Julia Yeomans - Self-propelled topological defects

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…

From  Katie Gentilello on October 28th, 2020 7 plays 0  

Peter J. Hirschfeld - Superconductivity: There's Plenty of Cream at the Bottom

In 1961, Brian Pippard gave a speech at IBM called "The Cat and the Cream", in which he declared that the superconductivity field was finished, at least for "young innocents who wish…

From  Katie Gentilello on October 21st, 2020 10 plays 0  

Andrew Zangwill - A Mind Over Matter: the Life and Science of Philip Anderson

Dr. Zangwill presents a biographical survey of the life and science of Nobel Laureate Philip W. Anderson, arguably the most productive and influential theoretical physicist of the second half of the…

From  Katie Gentilello on October 15th, 2020 46 plays 0  

James Sethna - Sloppy models, differential geometry, and why science works

Models of systems biology, climate change, ecology, complex instruments, and macroeconomics have parameters that are hard or impossible to measure directly. If we fit these unknown parameters,…

From  Katie Gentilello on October 4th, 2020 12 plays 0  

Philip Kim - Stacking atomic layers: quest for new materials and physics

Modern electronics heavily rely on the technology to confine electrons in the interface layers of semiconductors. In recent years, scientists discovered that various atomically thin van der Waals…

From  Katie Gentilello on September 18th, 2020 9 plays 0  

Taekjip Ha - Revisiting and Repurposing the Double Helix

DNA is an iconic molecule that forms a double helical structure, providing the basis for genetic inheritance, and its physical properties have been studied for decades. In this talk, I will present…

From  Katie Gentilello on September 2nd, 2020 15 plays 0  

David B. Kieda - Ultra-high Resolution Astronomical imaging using quantum properties of light

Ever since the first astronomical telescope observations made by Galileo (1610), optical astronomy has developed increasingly sophisticated methods for exploring the universe using only the …

From  Katie Gentilello on October 9th, 2018 14 plays 0  

Seth Shostak - SETI: Any Closer to a Discovery?

Are we alone in the universe? The scientific hunt for extraterrestrial intelligence is now well into its fifth decade, and we still haven’t discovered any cosmic company. Could all this mean…

From  Katie Gentilello on September 28th, 2018 9 plays 0  

The American Physical Society Report on the Status of LGBT People in Physics - Tim Atherton

In this talk, I’ll discuss climatic issues faced by LGBT people in Physics, informed by findings of the recent American Physical Society report on the status of LGBT people in Physics. This…

From  Katie Gentilello on May 10th, 2018 24 plays 0  

Arch and scaffold: Hilbert space and transformation theory - Michel Janssen

In early 1927, Paul Dirac and Pascual Jordan, independently of one another, published their versions of a general formalism tying the various forms of the new quantum theory together and giving the…

From  Katie Gentilello on April 9th, 2018 37 plays 0  

Ion Hydration and Effective Charge - Phil Pincus

Ions in water are typically understood to be hydrated, i.e. the appropriate water dipolar orientations point toward the charge (which is here taken to be of spherical symmetry). Depending on the…

From  Katie Gentilello on March 30th, 2018 17 plays 0