Past Events

Wednesday, April 6, 2016 - 4:30pm
Gross Hall 107 - Ahmadieh Family Auditorium
Speaker: Sidney Nagel (University of Chicago)
Because fluids flow and readily change their shape in response to small forces, liquid drops have frequently been used to model phenomena as diverse as the dynamics of star formation or the statics of nuclear shape. The exhilarating spray from waves crashing onto the shore, the distressing... Read More »
Wednesday, April 6, 2016 - 3:30pm
Gross Hall 330
Speaker: Yihong Wu, University of Illinois at Urbana-Champaign
Estimating the support size of a distribution is a classical problem in statistics, dating back to the early work of Fisher, Good-Turing, and the influential work by Efron-Thisted on "how many words did Shakespeare know." This problem has also been investigated by the CS theory community under the... Read More »
Tuesday, April 5, 2016 - 3:00pm
Physics 119
Speaker: Sidney Nagel (Univ of Chicago)
"Exploiting Disorder for Global Response: Independence of Bond-Level Contributions" - We are customarily taught to understand ordinary solids by considering perturbations about a perfect crystal. This approach becomes increasingly untenable as the amount of disorder in the solid increases; for a... Read More »
Wednesday, March 23, 2016 - 3:30pm
Physics 130
Speaker: Christoph Schmidt (Göttingen)
"Active Matter Builds Life" - Thermodynamic non-equilibrium is a defining feature of living systems on all levels of organization. Cells and tissues are built of "active matter", dynamic materials with built-in force generators. Such materials self-organize in biological systems into well-ordered... Read More »
Wednesday, March 23, 2016 - 5:00am
Speaker: Yuriy Bomze
A penumbral lunar eclipse is a subtle phenomenon occurs when the Moon moves through the outer part of Earth's shadow. It is not as spectacular as a total or partial lunar eclipses and could be recognized as a slight shadow across the Moon. A couple of telescopes will be set on the deck in front of... Read More »
Tuesday, March 22, 2016 - 3:30pm
Raleigh, NC 
Speaker: David Kaplan (INT, Univ. of Washington)
Currently there does not exist an accepted way to nonperturbatively regulate chiral gauge theories, such as the Standard Model. A lattice formulation leads to mirror fermions that we do not see, and decoupling via a big mass would break the gauge symmetry. Past approaches for eliminating the mirror... Read More »
Monday, March 21, 2016 - 11:30am
Physics 299
Speaker: Hao Zhang (TU Delft)
Note the unusual weekday! -- Majorana modes in hybrid superconductor-semiconductor nanowire devices can be probed via tunneling spectroscopy which shows a zero bias peak (ZBP) in differential conductance. However, alternative mechanisms such as disorder or formation of quantum dots can also give... Read More »
Thursday, March 10, 2016 - 11:30am
Physics 298
Speaker: Eduardo Novais (Universidade Federal do ABC, Brazil)
A fundamental challenge to quantum information processing is to protect information from the detrimental effects of the environment. A milestone in addressing this problem was the development of the theory of quantum error correction (QEC). In this work, we build upon previous studies in order to... Read More »
Tuesday, March 8, 2016 - 3:30pm
Chapel Hill, N.C.
Speaker: Heiko Hergert (Michigan State)
The reach of ab initio many-body techniques has increased tremendously in recent years, owing to new developments in many-body theory as well as advances in their numerical implementation. Coupled Cluster, Self-Consistent Green's Function, and In-Medium Similarity Renormalization Group (IM-SRG)... Read More »
Wednesday, March 2, 2016 - 3:30pm
Physics 130
Speaker: Warren S. Warren (Duke University)
"Revisiting Decades-Old Physics to Improve Modern Molecular Imaging" Molecular imaging-the use of chemical signatures to image function instead of merely structure-promises to enable a new generation of clinical modalities that can revolutionize both diagnosis and treatment. I will focus on two... Read More »