Physical Review A
Comment on ‘‘Test of local causality with very short light pulses’’
Morton H. Rubin
Abstract
It is shown in this Comment that the claim of Svozil that his paper [Phys. Rev. A 39, 2222 (1989)] demonstrates that nonvanishing spacelike and timelike contributions to the Feynman propagator do not lead to a violation of microscopic causality as claimed in the work of Hegerfeldt [Phys. Rev. D 10, 3320 (1974); Phys Rev. Lett. 54, 2395 (1985)] and Rubin [Phys. Rev. D 35, 3836 (1987)] is incorrect, and that his calculation is irrelevant to the issues discussed by these authors.