“Spooky action at a distance”, as Einstein called it, refers to the experimental fact that particles can affect each other instantly, even when separated by large distances. For example, if two photons are created together in what is called an entangled state and the angular...
In the article (“With faint chirp, scientists prove Einstein correct”, p. A1, 2/12/16) we read that black holes were part of Einstein’s theory. The truth is quite different. “Einstein argued vigorously against black holes [as] incompatible with reality" (see "Black Holes" by R. Anderson) and his opposition held back...
It is not generally known that Quantum Field Theory offers a simple answer to the “measurement problem” that was discussed on the September letters page of Physics Today. But by QFT I don’t mean Feynman’s particle-based theory; I mean Schwinger's QFT in which “there are...