Why Use a Hamilton Approach in QCD?

Abstract

We discuss $QCD$ in the Hamiltonian frame work. We treat finite density $QCD$ in the strong coupling regime. We present a parton-model inspired regularisation scheme to treat the spectrum ($\theta$-angles) and distribution functions in $QE{D}_{1+1}$. We suggest a Monte Carlo method to construct low-dimensionasl effective Hamiltonians. Finally, we discuss improvement in Hamiltonian $QCD$.

Comments: Proceedings of Hadrons and Strings, invited talk given by H. Kröger; Text (LaTeX file), 3 Figures (ps file)