Editing De Broglie–Bohm theory (section)

=== Quantum field theory ===
In Dürr et al.,<ref name="dgtz04">{{Cite journal|arxiv=quant-ph/0303156|last1=Duerr|first1=Detlef|title=Bohmian Mechanics and Quantum Field Theory|journal=Physical Review Letters|volume=93|issue=9|last2=Goldstein|first2=Sheldon|last3=Tumulka|first3=Roderich|last4=Zanghi|first4=Nino|year=2004|doi=10.1103/PhysRevLett.93.090402|pmid=15447078|page=090402|bibcode=2004PhRvL..93i0402D|citeseerx=10.1.1.8.8444|s2cid=8720296}}</ref><ref>{{Cite journal|arxiv=quant-ph/0407116|last1=Duerr|first1=Detlef|title=Bell-Type Quantum Field Theories|journal=Journal of Physics A: Mathematical and General|volume=38|issue=4|pages=R1|last2=Goldstein|first2=Sheldon|last3=Tumulka|first3=Roderich|last4=Zanghi|first4=Nino|year=2005|doi=10.1088/0305-4470/38/4/R01|bibcode=2005JPhA...38R...1D|s2cid=15547226}}</ref> the authors describe an extension of de Broglie–Bohm theory for handling [[creation and annihilation operators]], which they refer to as "Bell-type quantum field theories". The basic idea is that configuration space becomes the (disjoint) space of all possible configurations of any number of particles. For part of the time, the system evolves deterministically under the guiding equation with a fixed number of particles. But under a [[stochastic process]], particles may be created and annihilated. The distribution of creation events is dictated by the wavefunction. The wavefunction itself is evolving at all times over the full multi-particle configuration space.

Hrvoje Nikolić<ref name="nikolicqft">{{cite journal | last1 = Nikolic | first1 = H | year = 2010 | title = QFT as pilot-wave theory of particle creation and destruction | journal = International Journal of Modern Physics | volume = 25 | issue = 7| pages = 1477–1505 | doi=10.1142/s0217751x10047889|arxiv = 0904.2287 |bibcode = 2010IJMPA..25.1477N | s2cid = 18468330 }}</ref> introduces a purely deterministic de Broglie–Bohm theory of particle creation and destruction, according to which particle trajectories are continuous, but particle detectors behave as if particles have been created or destroyed even when a true creation or destruction of particles does not take place.