NP Theory Seminar

Nuclear/Particle Theory Seminar

This page contains the schedule for talks in the Duke Nuclear/Particle Theory Seminar series. The seminar is held every Thursday at 2:00 pm in the faculty lounge, Room 298 (Old Room 234) of the Duke Physics Department unless indicated otherwise below.

Some days are labeled "Informal Theory Lunch". On these days there is no specific topic and we encourage folks to show up with questions and topics they would like to discuss.

If you have any questions feel free to contact the organizer

Spring 2008

March 6 Speaker:

Shailesh Chandrasekharan


An Exotic Kosterlitz-Thouless Phase Transition



March 27 Speaker:

Bryon Neufeld


Sonic Mach Cones Induced by Fast Partons in a Perturbative Quark-Gluon Plasma


Quantum-Chromodynamics predicts a phase transition in sufficiently hot and/or dense nuclear matter. It is believed that this new state of matter, called the quark-gluon plasma (QGP), is accessible in ultra-relativistic heavy-ion collisions, such as those performed at Relativistic Heavy-Ion Collider (RHIC). An interesting problem in the study of QGP physics is to determine the effect of fast partons (i.e. quarks and gluons) on the bulk behavior of the evolving medium. Recent experimental results supporting the possible formation of a mach cone make this problem all the more relevant. I will present the space-time distribution of energy and momentum deposited by a fast parton traversing a weakly coupled quark-gluon plasma derived by treating the fast parton as the source of an external color field perturbing the medium. I use this result as a source term for the linearized hydrodynamical equations of the medium and show that the solution contains a sonic Mach cone and a dissipative wake if the parton moves at a supersonic speed. The Work is described in R.~B.~Neufeld, B.~Muller and J.~Ruppert, ``Sonic Mach Cones Induced by Fast Partons in a Perturbative Quark-Gluon Plasma,'', arXiv:0802.2254 [hep-ph].

April 3 Speaker:



Modeling Pions on a Lattice: "A Poor Man's QCD"


April 17 Speaker:

Nasser Demir


Hadronic Transport Coefficients from microscopic transport model.