Evolution of the CPT Invariance into a Basic Postulate in Physics

Details Evolution of the CPT Invariance into a Basic Postulate in Physics Evolution of the CPT Invariance into a Basic Postulate in Physics

2012-02-13

arxiv.org/abs/1202.2747v1

Physics

General Physics

34 pages, 1 figure

Scientific paper

Einstein-Podolsky-Rosen's paper in 1935 is discussed in parallel with an EPR experiment on $K^0\bar{K}^0$ system in 1998, yielding a strong hint of distinction in both wave-function and operators between particle and antiparticle at the level of quantum mechanics (QM). Then it is proposed that the CPT invariance in particle physics leads naturally to a basic postulate that the (newly defined) space-time inversion (${\bf x}\to -{\bf x},t\to -t$) is equivalent to the transformation between particle and its antiparticle. The evolution of this postulate from nonrelativistic QM via relativistic QM till the quantum field theory is discussed in some detail. The Klein paradox for both Klein-Gordon equation and Dirac equation is also discussed. Keywords: CPT invariance, Antiparticle, Quantum mechanics, Quantum field theory

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