Bohmian mechanics and quantum field theory.

@article{Drr2004BohmianMA,
  title={Bohmian mechanics and quantum field theory.},
  author={Detlef D{\"u}rr and Sheldon Goldstein and Roderich Tumulka and Nino Zangh{\'i}},
  journal={Physical review letters},
  year={2004},
  volume={93 9},
  pages={
          090402
        }
}
We discuss a recently proposed extension of Bohmian mechanics to quantum field theory. For more or less any regularized quantum field theory there is a corresponding theory of particle motion, which, in particular, ascribes trajectories to the electrons or whatever sort of particles the quantum field theory is about. Corresponding to the nonconservation of the particle number operator in the quantum field theory, the theory describes explicit creation and annihilation events: the world lines… 
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