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Events at Physics

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Events on Tuesday, February 23rd, 2016

Chaos & Complex Systems Seminar
Walking and stroke: A delicate balance
Time: 12:05 pm
Place: 4274 Chamberlin Hall (Refreshments will be served)
Speaker: Kreg Gruben, UW Department of Kenesiology
Abstract: Human walking requires precise control of numerous muscles acting on a complex skeletal structure. Stroke disrupts that control, leading to walking difficulty. Through research discoveries explaining how that control maintains upright posture and is altered by neurological injury, we are developing means to restore walking. <br>
Host: Sprott
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Theory Seminar (High Energy/Cosmology)
The Surprising Emergent Phenomena of Perturbative QCD
Time: 3:30 pm
Place: 5280 Chamberlin Hall
Speaker: Andrew Larkoski, Harvard University
Abstract: The standard lore says that the only observables that are calculable within perturbation theory in QCD or any gauge theory are those that are infrared and collinear safe. Recently, we have discovered observables that are not infrared and collinear safe, yet are calculable in perturbation theory when all orders effects are included. We refer to these observables as Sudakov safe and unlike infrared and collinear safe observables, their distributions have non-analytic dependence on the coupling. In this talk, I will discuss one Sudakov safe observable which exhibits independence on the coupling and manifests the universal collinear splitting functions.
Host: Yang Bai
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