Nonabelian Debye screening, tsunami waves, and worldline fermions

Details Nonabelian Debye screening, tsunami waves, and worldline fermions Nonabelian Debye screening, tsunami waves, and worldline fermions

1997-10-15

arxiv.org/abs/hep-ph/9710370v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, LaTeX, requires crckapb.sty. To appear in the proceedings of the International School of Astrophysics ``D. Chalonge'

Scientific paper

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 Gagn\'{e} 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.

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