A generalized Fock-Tani representation of non-relativistic systems containing composite particles

Gilbert, J.

doi:10.1016/0378-4371(88)90223-3

Cited by 1 publication

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“…Observers, whether sentient beings or simple machines, are composites of large numbers of elementary quanta, so the fields (2) that create them are to be viewed as effective composite operators [38][39][40][41][42][43][44][45][46][47][48][49], and it is certainly justified to model the observers as distinguishable-the index [p] will be referred to as the "species" index even when it labels the two different observers.…”

Section: Fields and Free Hamiltoniansmentioning

confidence: 99%

Observers and Locality in Everett Quantum Field Theory

Rubin

2011

Found Phys

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A model for measurement in collapse-free nonrelativistic fermionic quantum field theory is presented. In addition to local propagation and effectively-local interactions, the model incorporates explicit representations of localized observers, thus extending an earlier model of entanglement generation in Everett quantum field theory [M. A. Rubin, Found. Phys. 32, 1495-1523 (2002)]. Transformations of the field operators from the Heisenberg picture to the Deutsch-Hayden picture, involving fictitious auxiliary fields, establish the locality of the model. The model is applied to manifestly-local calculations of the results of measurements, using a type of sudden approximation and in the limit of massive systems in narrow-wavepacket states. Detection of the presence of a spin-1/2 system in a given spin state by a freely-moving two-state observer illustrates the features of the model and the nonperturbative computational methodology. With the help of perturbation theory the model is applied to a calculation of the quintessential "nonlocal" quantum phenomenon, spin correlations in the Einstein-Podolsky-Rosen-Bohm experiment.Comment: Some changes to introduction and discussion sections, typos corrected, conclusions unchanged. To appear in Foundations of Physic

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Section: Fields and Free Hamiltoniansmentioning

confidence: 99%

Observers and Locality in Everett Quantum Field Theory

Rubin

2011

Found Phys

View full text Add to dashboard Cite

show abstract

A generalized Fock-Tani representation of non-relativistic systems containing composite particles

Cited by 1 publication

References 35 publications

Observers and Locality in Everett Quantum Field Theory

Observers and Locality in Everett Quantum Field Theory

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