DeGrand Abstract

I'll tell you about a little pilot calculation of spectroscopy in semi-realistic (two flavor) QCD with 2,3,4,5 colors, and how the results compare to expectations from large N counting.

Ayyar Abstract

A class of lattice four-fermion models show an interesting phase diagram, with an exotic, strong paramagnetic phase (PMS phase) where fermions are massive without the formation of any bilinear condensates. Existence of a continuum limit of this phase would imply the existence of a new mechanism for fermion mass generation without spontaneous symmetry breaking. In this talk, I'll discuss our study of one such lattice model in which a continuum limit of this phase exists in (2+1)D. 

Romatschke Abstract

Examples for hydrodynamic collective modes are sound waves, shear and diffusive modes. But what are non-hydrodynamic collective modes? Most physicists likely have never ever heard about non-hydrodynamic modes in their entire career. Indeed, there does not seem to be a single textbook on this topic. This colloquium will give an introduction to the physics of non-hydrodynamic modes, featuring gravitational waves, string theory predictions for experiment, the coolest and hottest stuff on earth and high-temperature superconductors.

Litos Abstract

With the size and cost of high energy physics machines rapidly approaching the limits of feasibility, a fundamentally new method for accelerating particles up to very high energies will be required to continue to push at the boundaries of the energy frontier. Two key factors dominate the estimated cost of future collider designs: the size of the machine, and its power consumption. Plasma wakefield acceleration is a forefront electron and positron acceleration technique that addresses both of these factors simultaneously by providing extremely high accelerating gradients and a high energy transfer efficiency. In this talk, I will present results from SLAC National Accelerator Laboratory's Facility for Advanced Accelerator Experimental Tests (FACET), where the acceleration of electron and positron bunches in a high gradient, high efficiency plasma wakefield accelerator driven by a high-density electron beam has been demonstrated for the first time.