Elementary Systems of (1 + 1) Kinematical Groups: Contraction and Quantization
Elementary Systems of (1 + 1) Kinematical Groups: Contraction and Quantization
We present the (algebra) group contraction chain SU(1, 1) → P(1, 1) → G(1, 1), where P(1, 1) and G(1, 1) are the Poincaré and the Galilei groups, respectively, in (1 + 1) dimensions. We have paid attention to the contraction of the pseudo-extended Poincaré group to the central extended …