1997/10/15 by Robert D. Pisarski, Pisarski, Robert D. · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Nuclear physics research studies #Statistical Mechanics and Entropy #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9710370
16 pages, LaTeX, requires crckapb.sty. To appear in the proceedings of the International School of Astrophysics ``D. Chalonge'', Erice, Italy, Sept. 4-15, 1997; also based on a talk given at the RIKEN BNL Workshop on ``Non-equilibrium many body dynamics'', Upton, N.Y., Sept. 23-25, 1997
I give a pedagogical review of the derivation for the effective lagrangian for nonabelian Debye screening, or hard thermal loops. Following Kelly, Liu, Lucchesi, and Manuel, I give the simplest derivation possible, using classical kinetic theory. The result is valid not just for a thermal, but for an arbitrary initial distributions. I use this to study the evolution, at short times, of a gluonic ``tsunami wave''. I also suggest how classical kinetic theory may arise at one loop order. Using the wordline representation of the one loop effective action, I follow D'Hoker and Gagné to replace the Wilson line by an integral over worldline fermions. A bilinear of these worldline fermions naturally defines a nonabelian charge, whose equation of motion is Wong's equation.