English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We study integrations over light-cone momenta in the high energy effectiveaction of QCD. After a review of the effective action, we arrive on aregularization mechanism from matching with QCD diagrams, which we apply to are-derivation of the reggeized gluon and of the BFKL-equation. We studyconsequences of the proposed regularization on the analytic structure of 2->3and 2->4 production amplitudes in the Multi-Regge-Kinematics. We derive acertain part of the 1-loop corrections to the production vertex and demonstratethat they yield the on-set of corrections demanded by the Steinmann-relations.The Reggeon-Particle-2-Reggeon vertex is determined and applied to theconstruction of various signature configurations of the production amplitudes.We extend the regularization method to states of three and four reggeizedgluons and propose a supplement to the effective Lagrangian. We derive verticesfor the 1-3 and 2-4 reggeized gluon transition for the elastic amplitude andverify that signature conservation is obeyed. Integral equations for the stateof three and four reggeized gluons are formulated and shown to agree with aresult by Bartels and Wusthoff. In a second part we investigate the high-energybehavior of QCD for different surface topologies of color graphs. After a briefreview of the planar limit (bootstrap and gluon reggeization) and of thecylinder topology (BFKL) we investigate the 3-3 scattering in the triple Reggelimit which belongs to the pair-of-pants topology. We re-derive the triplePomeron vertex function and show that it belongs to a specific set of graphs incolor space which we identify as the analog of the Mandelstam diagram. We thenextend the study to the high-energy behavior of N=4 SYM where we find a newclass of color graphs not present in QCD.

The high energy behavior of QCD: The effective action and the triple-Pomeron-vertex