Allori, Valia and Goldstein, Sheldon and Tumulka, Roderich and Zanghi, Nino (2006) On the Common Structure of Bohmian Mechanics and the Ghirardi-Rimini-Weber Theory. [Preprint]
Abstract
Bohmian mechanics and the Ghirardi-Rimini-Weber theory provide opposite resolutions of the quantum measurement problem: the former postulates additional variables (the particle positions) besides the wave function, whereas the latter implements spontaneous collapses of the wave function by a nonlinear and stochastic modification of Schrodinger's equation. Still, both theories, when understood appropriately, share the following structure: They are ultimately not about wave functions but about ``matter'' moving in space, represented by either particle trajectories, fields on space-time, or a discrete set of space-time points. The role of the wave function then is to govern the motion of the matter.
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