Nathan Weiss, Associate Professor

B.Sc., Univ.of Toronto (73); Ph.D., McGill
Univ.(76); NSERC Postdoctoral Fellowship, Stanford Linear Accelerator Centre.
Visiting Research Assistant Prof., Univ of Illinois at Urbana-Champain (78--80)

Research Interests

The main goal of my research is the application of Quantum Field Theory to problems in several areas of Physics with particular emphasis on Elementary Particle Physics. Recent projects have included:

Gauge Theories (especially Quantum Chromodynamics) in unusual environments such as high temperatures and densities. Such conditions were present in the Early Universe and may be produced in Ultra-Relativistic Heavy Ion Collisions.
The application of Field Theory techniques to the problem of Anyon Superconductivity which has been proposed as a mechanism for describing High Temperature Superconductors.
Investigation of techniques for obtaining a Mean Field Theory for Quantum Chromodynamics which would be exact when the number of colours is large. Recent investigation of this problem focus on a Lattice Gauge Theory known as "Induced QCD". These studies have led to research into "Matrix Models" which are also relevant to the study of Quantum Gravity in 2 Spacetime Dimensions.
Neutrino Oscillations with particular application to Solar and Atmospheric Neutrions. Of particular interest is the "MSW" effect in which neutrino oscillations are enhanced by their passage through matter.
Studies of Hadron Jets produced in High Energy Reactions.

Selected Publications

"Induced QCD and Hidden Local Z(N) Symmetry", Phys. Rev. Lett. 69, 3435 (1992), I. Kogan, G.W. Semenoff and N. Weiss.

"Z(N) Domains in Gauge Theories with Fermions at High Temperatures", Phys. Lett. 277, (331) (1992), V.M. Belyaev, I. Kogan, G.W. Semenoff and N. Weiss.

"The Theory of Anyonic Superconductivity; A Review", International Journal of Modern Physics, A6, 29 (1991), J.D. Lykken, J. Sonnenschein and N. Weiss.

"Monte Carlo Study of Quantum Number Retention in Hadron Jets", Phys. Rev. D45 (2360) 1992, N. Weiss.