Past Events

Tuesday, March 25, 2014 - 3:30pm
Physics 298
Speaker: Roy Lacey (Stonybrook)
It is shown that the acoustic scaling patterns of anisotropic flow for different event shapes at a fixed collision centrality (shape-engineered events), provide robust constraints for the event-by-event fluctuations in the initial-state density distribution from ultrarelativistic heavy ion... Read More »
Tuesday, March 25, 2014 - 11:30am
Physics 298
Speaker: Fan Zhang (Univ. of Pennsylvania)
The discovery of topological band insulators has created a revolution in condensed matter physics. We generalize the essential idea of band inversion and symmetry protection to experimentally feasible superconducting systems with time-reversal symmetry. When such a one-dimensional system becomes... Read More »
Monday, March 24, 2014 - 3:00pm
Physics 128
Speaker: Fan Zhang (University of PA)
** Please note this event is on MONDAY not Wednesday and will be held at 3:00pm not 3:30pm. ** "From Topological Insulators to Majorana Fermions" - The discovery of topological insulators has created a revolution in condensed matter science that has far ranging implications over coming decades. I... Read More »
Tuesday, March 18, 2014 - 3:30pm
Physics 298
Speaker: Ralf Rapp (Texas A&M)
Hadronic many-body theory predicts a strong broadening of the rho-meson spectral function in hot and dense matter, leading to a melting of its resonance structure as the pseudo-critical temperature is approached from below. Pertinent calculations of thermal dilepton spectra in heavy-ion collisions... Read More »
Tuesday, March 11, 2014 - 3:30pm
Physics 298
Speaker: Jesse Thaler (MIT)
Perturbative QCD is a powerful tool for calculating the properties of jets at the LHC. However, there are many jet observables for which non-perturbative input from QCD is needed. In this talk, I present three case studies at the boundary between perturbative and non-perturbative QCD---ratio... Read More »
Thursday, February 27, 2014 - 11:45am
Physics 128
Speaker: Soumya Bera (Institut Neel, Grenoble France)
In nature real systems are coupled to a large number of macroscopic degrees of freedom which play an important role in determining their phase coherence. To understand the role of the environment it is customary to begin with a simple model of a qubit (two level system) coupled with an infinite... Read More »
Tuesday, February 25, 2014 - 3:30pm
Physics 298
Speaker: Jacob Bourjaily (Harvard)
In the past ten years, the study of scattering amplitudes in quantum field theory has led to a revolutionary reformulation of the subject. This revolution began with the discovery, in 2005, of a recursive expansion for scattering amplitudes (to leading order) in terms of planar, trivalent, two-... Read More »
Thursday, February 20, 2014 - 11:30am
Physics 128
Speaker: Leong-Chuan Kwek
To circumvent the limitations of conventional computers in tackling complex physical processes, Richard Feynman proposed nearly thirty years ago a means of using well-understood quantum systems called quantum simulators (or quantum emulators) to emulate similar, but otherwise poorly understood,... Read More »
Wednesday, February 19, 2014 - 3:30pm
Physics 128
Speaker: Robin Canup (SouthWest Research Institute)
*CANCELLED** "Giant Impact Models of Lunar Origin" - Nearly all recent work on lunar origin has focused on the giant impact theory, which proposes that the collision of a planet-sized body with the forming Earth produced a disk of debris that later accumulated into the Moon. The impact theory is... Read More »
Tuesday, February 18, 2014 - 3:30pm
Physics 298
Speaker: Xiangdong Ji (U. of Maryland)
I introduce light-cone physics as a large momentum effective field theory (LMEF). This notion allows formulating Euclidean lattice calculations of parton physics which is otherwise considered impossible.