Studies in Lattice Field Theory
J. Stack*
National Science Foundation, PHY99-00658

The primary purpose of this work is to gain a physical understanding of how quarks are confined inside nuclear particles or hadrons. Quantum chromodynamics is the theory describing quarks and their interactions, and the proposed work will involve supercomputer simulations of quantum chromodynamics. These simulations provide data unobtainable by other means, which can be used to provide a physical picture of the forces confining quarks. These forces underlie all the phenomena of nuclear physics and rank in importance with the more familiar forces of gravity and electromagnetism.

Theoretical Nuclear Physics
G. A. Baym,* V. R. Pandharipande,* D. G. Ravenhall,* J. Wambach,* B. Vanderheyden, M. Paris, A. Akmal
National Science Foundation, PHY 98-00978

Projects include evolution of ultrarelativistic heavy-ion collisions, studies of dense matter applied to the problem of neutron star interiors, and other problems in astrophysics; correlations between nucleons in nuclei and of subnuclear degrees of freedom, as seen in high-energy lepton scattering; studies of nuclear vibrational modes applied to scattering experiments on nuclear bound states, giant resonances, the quasi-elastic region, and collective motion at finite temperature.