High-Energy QCD and Wilson Lines

Abstract

At high energies the particles move very fast so their trajectories can be approximated by straight lines collinear to their velocities. The proper degrees of freedom for the fast gluons moving along the straight lines are the Wilson-line operators -- infinite gauge factors ordered along the straight line. I review the study of the high-energy scattering in terms of Wilson-line degrees of freedom.

110 pages, Latex, 40 eps figures, sprocl.sty. To be published in the Boris Ioffe Festschrift ``At the Frontier of Particle Physics/Handbook of QCD'', edited by M. Shifman (World Scientific, Singapore, 2001)

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