k+=0 Modes in Light-Cone Quantization
Abstract
We investigate the light-cone quantization of φ3 theory in 1+1 dimensions with a regularization of discretized light-cone momentum k+. Solving a second-class constraint associated with the k+=0 mode, we show that the k+=0 mode propagates along the internal lines of Feynman diagrams in any order of perturbation, hence our theory recovers the Lorentz invariance.
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