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Events at Physics

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Events During the Week of February 23rd through March 1st, 2020

Monday, February 24th, 2020

Plasma Physics (Physics/ECE/NE 922) Seminar
Frontiers in Linear and Nonlinear Plasma Physics
Time: 12:05 pm
Place: 2241 Chamberlin Hall
Speaker: Jeff Parker, Lawrence Livermore National Laboratory
Abstract: This talk will highlight two areas of progress involving linear and nonlinear plasma physics. In the first half I will discuss zonal flows, a pervasive phenomenon in the universe and a prominent example of nonlinear self-organization and pattern formation. The coexistence of zonal flow and turbulence remains incompletely understood, as coherent zonal structures spontaneously break the oft-assumed symmetries of homogeneity and isotropy and profoundly alter the character of turbulent flow. Moreover, intense practical interest in zonal flows has arisen because they are believed to regulate the deleterious turbulence that degrades confinement in magnetic fusion devices. A recent statistical approach has led to breakthroughs in the theoretical understanding of zonal flow, with a systematic framework offering an analytically tractable, self-consistent model that captures many features of zonal flow behavior. Plasma physics also offers insight into zonal flow in gas giants, as considerations from MHD may explain recent measurements of the zonal-flow termination depth of 3,000 km in Jupiter.

In the second half, I will discuss how even linear physics can surprise us with new and rich phenomena. Topological phases of matter were recognized by the 2016 Nobel Prize and are now a large subject in condensed matter physics and photonics. I will present the first applications of these ideas to plasma physics with two examples: (1) A topological gaseous plasmon polariton at the surface between a magnetized plasma and vacuum, and (2) the Reversed-Shear Alfvén Eigenmode, well known in tokamaks. The new field of topological plasma waves represents a multifaceted research frontier with fundamental questions to be addressed by theory, simulation, and experiment.
Host: Jan Egedal
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Atomic Physics Seminar
QC Cluster Seminar
Time: 3:00 pm
Place: 5310 Chamberlin Hall
Speaker: Erhan Saglamyurek, University of Alberta
Abstract: tbd
Host: Mark Saffman
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Tuesday, February 25th, 2020

Chaos & Complex Systems Seminar
The emergence of human emotions: Learning, development and biology
Time: 12:05 pm
Place: 4274 Chamberlin (refreshments will be served)
Speaker: Seth Pollak, UW Department of Psychology
Abstract: Theories about the emergence of human emotion have traditionally emphasized evolutionarily preserved, universal aspects of emotion or the functional and cultural adaptations of emotions. While these opposing views make different assumptions about the initial state of emotion in the brain, both theories devote little attention to or specification about potential processes for learning and developmental change. This colloquium will focus on the question of how brain and behavior are shaped and refined by children's early social and emotional experiences. To do so, I will describe recent research involving children who have experienced aberrant early life experiences. These include child abuse and neglect, children raised in extreme poverty, children raised in institutional settings, and children who have endured traumatic life experiences. Studies of these children provide new insights about the developmental processes underlying socio-emotional learning as well as shed light on the mechanisms through which children acquire emotions. In addition to these basic science questions, children raised in adverse environments are at increased risk for a variety of health, academic, and social problems. I will highlight ways in which research in this area can both address central issues in human development as well as hold tremendous promise for improving the health and well-being of children.
Host: Clint Sprott
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NPAC (Nuclear/Particle/Astro/Cosmo) Forum
Seminar Title Coming Soon
Time: 3:30 pm
Place: 4274 Chamberlin Hall
Speaker: Summer Blot, DESY
Host: Albrecht Karle
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Council Meeting
Time: 4:00 pm
Place: 2314 Chamberlin Hall
Host: Sridhara Dasu
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Wednesday, February 26th, 2020

Department Meeting
Time: 12:15 pm
Place: B343 Sterling Hall
Speaker: Sridhara Dasu, Department Chair
Host: Sridhara Dasu
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Theory Seminar (High Energy/Cosmology)
Title to be announced
Time: 4:00 pm
Place: 5280 Chamberlin
Speaker: Alice Pisani, Princeton
Host: Dan Chung
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Thursday, February 27th, 2020

No events scheduled

Friday, February 28th, 2020

PhD Prospective Student Visit Day
Time: 1:30 pm
Speaker: na, na
Abstract: For admitted students only
Host: Michelle Holland, Graduate Program Coordinator
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Physics Department Colloquium
Time: 3:30 pm
Place: 2241 Chamberlin Hall
Speaker: Ke Fang, Stanford University
Host: Albrecht Karle
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