From target to projectile and back again: self-duality of high-energy scattering evolution in QCD.
We prove that the complete kernel for the high-energy evolution in QCD must be self-dual. The relevant duality transformation is formulated in precise mathematical terms and is shown to transform the charge density into the functional derivative with respect to the single-gluon scattering matrix. This transformation interchanges the high and the low density regimes. We demonstrate that the original Jalilian-Marian-Iancu-McLerran-Weigert-Leonidov-Kovner kernel, valid at large density, is indeed dual to the low density limit of the complete kernel derived recently in hep-ph/0501198.
Kovner
Alex
A
Physics Department, University of Connecticut, 2152 Hillside Road, Storrs, CT 06269-3046, USA.
Lublinsky
Michael
M