Is quantum field theory a genuine quantum theory? Foundational insights on particles and strings

Details Is quantum field theory a genuine quantum theory? Foundational insights on particles and strings Is quantum field theory a genuine quantum theory? Foundational insights on particles and strings

2007-05-24

arxiv.org/abs/0705.3542v3

Europhys. Lett.85:20003, 2009

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, revised, new references, to appear in Europhys. Lett

Scientific paper

Practically measurable quantities resulting from quantum field theory are not described by hermitian operators, contradicting one of the cornerstone axioms of orthodox quantum theory. This could be a sign that some of the axioms of orthodox quantum theory should be reformulated. A non-orthodox reformulation of quantum theory based on integral curves of particle currents is advocated and possible measurable manifestations are discussed. The consistency with particle creation and destruction requires particles to be extended objects, which can be viewed as a new derivation of string theory. Within this reformulation, an indirect low-energy test of string theory is also possible.

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