Quantum randomness emerging under gravitational nonlinearity
  A scenario is outlined for quantum measurement, assuming that self-sustaining classicality is the consequence of an attractive gravitational self-interaction acting on massive bodies, and randomness arises already in the classical domain. A simple solvable model is used to demonstrate that small quantum systems influence big ones in a mean-field way, offering a natural route to Born's probability rule. 
Tam\'as Geszti