ar X iv : 0 80 3 . 26 77 v 1 [ he p - th ] 1 8 M ar 2 00 8 SQED 4 and QED 4 on the null - plane
نویسنده
چکیده
We studied the scalar electrodynamics (SQED4) and the spinor electrodynamics (QED4) in the null-plane formalism. We followed the Dirac’s technique for constrained systems to perform a detailed analysis of the constraint structure in both theories. We imposed the appropriated boundary conditions on the fields to fix the hidden subset first class constraints which generate improper gauge transformations and obtain an unique inverse of the second class constraint matrix. Finally, choosing the null-plane gauge condition, we determined the generalized Dirac brackets of the independent dynamical variables which via the correspondence principle give the (anti)commutators for posterior quantization.
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ar X iv : 0 80 8 . 22 17 v 1 [ he p - th ] 1 5 A ug 2 00 8 Scalar QCD 4 on the null - plane
We have studied the null-plane hamiltonian structure of the free Yang-Mills fields and the scalar chromodynamics (SQCD4). Following the Dirac’s procedure for constrained systems we have performed a detailed analysis of the constraint structure of both models and we give the generalized Dirac brackets for the physical variables. In the free Yang-Mills case, using the correspondence principle in ...
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