Unobservable Potentials to Explain a Quantum Eraser and a Delayed-Choice Experiment

We present a new explanation for a quantum eraser. Mathematical description of the traditional explanation needs quantum-superposition states. However, the phenomenon can be explained without quantum-superposition states by introducing unobservable potentials which can be identified as an indefinite metric vector. In addition, a delayed choice experiment can also be explained by the interference between the photons and unobservable potentials, which seems like an unreal long-range correlation beyond the causality.Comment: 21pages, 2figures. The related paper is "arXiv:1709.04103 [physics.gen-ph]" published by "Journal of Computational and Theoretical Nanoscience, Volume 14, Number 8, August 2017, pp. 4121-4132(12)." DOI: 10.1166/jctn.2017.679