Past Events

Wednesday, January 17, 2018 - 4:30pm
Physics 298
Speaker: Art Champagne (UNC and Duke Physics)
"Abundance Anomalies in Globular Clusters: Does the Fault Lie in the Stars?" - Globular clusters are the oldest structures to form in the galaxy and thus their ages provide a wealth of information about the evolution of the Milky Way. These ages assume that we understand stellar evolution and the... Read More »
Tuesday, January 16, 2018 - 3:30pm
Physics 298
Speaker: Jacquelyn Noronha-Hostler
The QCD equation of state at zero baryon chemical potential is the only element of the standard dynamical framework to describe heavy ion collisions that can be directly determined from first principles. Continuum extrapolated lattice QCD equations of state have been computed using 2+1 quark... Read More »
Thursday, January 11, 2018 - 11:30am
Physics 298
Speaker: Sho Yaida (Duke University)
Glassy materials are omnipresent in everyday life from windows to plastics to piles of sand. Yet our understanding of both their (equilibrium) liquid and (out-of-equilibrium) solid phases lags far behind that of crystalline counterparts. Recent advances are rapidly changing the ways in which we... Read More »
Thursday, December 7, 2017 - 11:30am
Physics 298
Speaker: Thomas Barthel (Duke University)
Quantum dimer models appear in different contexts when describing dynamics in constrained low-energy manifolds, such as for frustrated Ising models in weak transverse fields or Heisenberg magnets with quantum disordered ground states. In this talk, I address a particularly interesting case, where a... Read More »
Tuesday, December 5, 2017 - 3:30pm
Physics 298
Speaker: Alessandro Baroni (University of South Carolina)
Nuclear chiral effective field theory (xEFT) is the theoretical framework that permits the derivation of nuclear potentials and electroweak currents from the symmetries of QCD|the exact Lorentz, parity and time-reversal symmetries, and the approximate chiral symmetry. In this talk, the derivation... Read More »
Wednesday, November 29, 2017 - 3:30pm
Physics 128
Speaker: Gordon Cates (University of Virginia)
"Neutrons, Nephrology and Polarized Nuclear Imaging: MRI with a Millionfold Increase in Sensitivity" - The technique of spin-exchange optical pumping has found extensive use in both fundamental research and a variety of applications. For example, high-density polarized He-3 targets have played an... Read More »
Thursday, November 16, 2017 - 11:30am
Physics 298
Speaker: Aashish Clerk (University of Chicago)
Interest continues to grow in photonic analogues of topological electronic phases. In most cases, these systems are non-interacting, and have the same band structure and edge state structure as their fermionic counterparts. In this talk, I'll discuss recent theory work in my group showing how... Read More »
Tuesday, November 14, 2017 - 3:30pm
Raleigh, NC
Speaker: Yacine Mehtar Tani (Brookhaven National Lab)
The phenomenon of jet quenching in ultra-relativistic heavy ion collisions reveals to effect of substantial finial state interactions which cause QCD jets to lose energy to the quark-gluon plasma (QGP), mainly by induced gluon radiation. In standard analytic approaches to energy loss, jets are... Read More »
Wednesday, November 8, 2017 - 3:30pm
Physics 128
Speaker: Stephen Teitsworth (Duke Physics)
"Noise-driven dynamics in far-from-equilibrium systems" - The dynamical behavior of many far-from-equilibrium systems is crucially impacted by the interplay of noise and deterministic degrees of freedom. Examples of noise-enabled dynamics occur throughout the natural sciences including biophysical... Read More »
Tuesday, November 7, 2017 - 3:30pm
Raleigh, NC
Speaker: Dr. Matt Sievert (Theoretical Division of Los Alamos National Laboratory)
Because parton distribution functions (PDFs) are measured at finite center-of-mass energies, they must always be extrapolated to high-energy asymptotics where x goes to zero. This extrapolation is especially important for the determination of sum rules, such as the contribution to the proton spin... Read More »