Speaker: Daniel Gruenewald (University of Heidelberg, Germany)

Title:
Near Light Cone QCD on the Lattice

Abstract:
Many interesting observables in high-energy scattering are 
related to Wilson loop correlation functions close to the 
light cone. Therefore, we propose to formulate lattice QCD 
in terms of near light cone coordinates. We derive an 
effective ground state projection operator suitable for a 
Quantum-Diffusion Monte-Carlo. It has to be supplemented by 
a guidance wave functional approximating the true ground 
state. We find analytical solutions for the ground state 
wave functional in the strong and weak coupling limit which 
motivate a multi-parameter guidance wave functional Ansatz 
capable of covering the whole coupling range. We optimize 
this Ansatz variationally and elaborate on a renormalization 
prescription.