Disruption of quantum coherence upon a change in spatial topology in quantum gravity
Lavrelashvili G. V. , Rubakov V. A. ,Tinyakov P. G.
Quantum coherence may be disrupted when closed universes of Planckian size split off from a plane space. The observation of K° — K° oscillations imposes a restriction on the amplitude for such processes. This amplitude must be strongly suppressed in comparison with the dimensional estimate Mt.