NONLOCAL AND LOCAL GHOST FIELDS IN QUANTUM CORRELATIONS

Einstein-PodoEskv-Rosen quantum correlations are discussed from the pe rspective of a ghost field introduced by Einstein. The concepts of gho st field, hidden variables, local reality and the Bell inequality are reviewed. In the framework of the correlated singlet state of two spin -1/2 particles, it is shown that quantum mechanics can be cast in a wa y that has the form of either a non-positive and local ghost field or a positive and non-local ghost field.