Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-08-28
Physics
High Energy Physics
High Energy Physics - Phenomenology
Presented at VII Hadron Physics 2000, Caraguatatuba, Sao Paulo, Brazil, 10-15 April 2000
Scientific paper
The light-front (LF) quantization of QCD in light-cone (l.c.) gauge is discussed. The Dirac method is employed to construct the LF Hamiltonian and theory quantized canonically. The Dyson-Wick perturbation theory expansion based on LF-time ordering is constructed. The framework incorporates in it simultaneously the Lorentz gauge condition as an operator equation as well. The propagator of the dynamical $\psi_+$ part of the free fermionic propagator is shown to be causal while the gauge field propagator is found to be transverse. The interaction Hamiltonian is re-expressed in the form closely resembling the one in covariant theory, except for additional instantaneous interactions, which can be treated systematically. Some explicit computations in QCD are given.
Brodsky Stanley J.
Srivastava Prem P.
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