Particles of Negative and Zero Energy in Black Holes and Cosmological Models

Particles with negative energies are considered for three different cases: inside of horizon Schwarzschild black hole, Milne's coordinates in flat Minkowski space-time (Milne's universe using nonsynchronous coordinates) and cosmological G\"{o}del model the rotating universe. It is shown that differently from nondiagonal term where it occurs impossible they present all other cases paper. zero energy also possible first two cases.