Past Events

Tuesday, April 1, 2014 - 11:30am
Physics 298
Speaker: Cenke Xu (UCSB)
Spin liquid states are ground states of quantum spin systems that do not spontaneously break any global symmetry. In the last decade tremendous progresses have been made in searching for spin liquid states in real materials. So far three different kinds of spin liquid materials all show very... Read More »
Thursday, March 27, 2014 - 11:30am
Physics 298
Speaker: Ted Pudlik (Boston Univ & Duke)
Some of the simplest systems accessible to experiments with ultracold gases in optical lattices are dimers: atoms in a double-well optical lattice, or atoms in a single optical trap, but with two interacting spin states. These systems are very accurately represented by the Bose-Hubbard dimer. A... Read More »
Wednesday, March 26, 2014 - 1:30pm
Teer 106
Speaker: Chris Collins (OIT), Jimmy Dorff (Physics), William Shaw (Library/Digital Scholarship), Drew Stinnett (OIT)
This two-day / six-unit course will provide students with a basic introduction to Linux and Unix systems in use in many of the biological and computational research departments around campus. Attendees will have access to a Linux computational server to practice various tasks and perform labs in... Read More »
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 »

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