Hamburg 2016 – wissenschaftliches Programm

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AGPhil: Arbeitsgruppe Philosophie der Physik

AGPhil 4: Philosophy of Physics 4

AGPhil 4.4: Vortrag

Dienstag, 1. März 2016, 17:30–18:00, VMP6 HS G

Particles creation and annihilation: A Bohmian approach — •Andrea Oldofredi — Université de Lausanne, Switzerland — Faculté des Lettres, Section de Philosophie — 1015 Lausanne

Though standard Quantum Field Theory (QFT) is generally defined as the combination of the axioms of Quantum Mechanics (QM) and Special Relativity (SR), there exists a class of non-relativistic models which are generalizations of Bohmian Mechanics (BM) to the phenomena of particles creation and annihilation reproducing the statistics of QFT experiments. These models share a common particle ontology being insensible to the conclusions of several no-go theorems which exclude the possibility of a proper particle theory in the context of QFT (they involve specific relativistic constraints which are violated in BM). In this talk my aim will be to present two different models of Bohmian QFTs with different physical content as serious alternatives to the standard formulation of QFT. These models are the Bell-type QFT and the Dirac sea approach. The virtue of these theories is the clear mathematical and ontological structure. They specify a primitive ontology (determination of the fundamental entities the theory is about) and dynamical variables which constraint the motion of the primitive variables. These models reproduce the experimental results of QFT since the Born's distribution holds. They exemplify how a clear metaphysical stance could help in constructing rigorous physical theories.