Abstract
We discuss the interpolation between the instant form dynamics (IFD) and the light-front dynamics (LFD) proposed by Dirac in 1949 and present its application to quantum electrodynamics (QED). Our analysis clarifies any conceivable confusion in the prevailing notion of the equivalence between the IFD at infinite momentum frame and the LFD. Entwining the fermion propagator interpolation with our previous works of the interpolating helicity spinors and the electromagnetic gauge field interpolation, we fasten the bolts and nuts necessary to launch the interpolating QED at least in the tree level.
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This work was supported by the US DOE Contract No. DE-FG02-03ER41260 and in part by the FAPESP under process 2014/20892-2.
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Ji, CR., Li, Z., Ma, B. et al. Interpolating Quantum Electrodynamics. Few-Body Syst 59, 86 (2018). https://doi.org/10.1007/s00601-018-1397-4
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DOI: https://doi.org/10.1007/s00601-018-1397-4