1996/10/15 by N. C. J. Schoonderwoerd, Schoonderwoerd, N. C. J., B. L. G. Bakker +1
Chemistry · Physics and Astronomy · #Advanced Chemical Physics Studies #Photochemistry and Electron Transfer Studies #Quantum optics and atomic interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9610361
3 pages latex, uses epsf, epsfig, wrapfig. To appear in the Proceedings of the 12th International Symposium on High-Energy Spin Physics Amsterdam Sept. 1996
arxiv created 1996/10/15 · arxiv updated 2009/11/30
Light-Front Field Theory (LFFT) is a good candidate to describe bound states. In LFFT covariance is non-manifest. Burkardt and Langnau claim that, even for scattering amplitudes, rotational invariance is broken. We will take a different path of obtaining rules for light-front time-ordered diagrams. Covariance depends on the choice of a regulator α. We need to apply some regularisation scheme to render physical amplitudes finite. This is done by applying minus regularisation. In this process all ambiguities related to the regulator α are removed. Therefore there is equivalence between the perturbative expansions of covariant and LFFT.