Dynamical features of interference phenomena in the presence of entanglement

Details Dynamical features of interference phenomena in the presence of entanglement Dynamical features of interference phenomena in the presence of entanglement

2011-04-25

arxiv.org/abs/1104.4737v1

Physics

Quantum Physics

Accepted for publication in The Physical Review A

Scientific paper

A "strongly" interacting, and entangling, heavy, non recoiling, external particle effects a significant change of the environment. Described locally, the corresponding entanglement event is a generalized electric Aharonov Bohm effect, that differs from the original one in a crucial way. We propose a gedanken interference experiment. The predicted shift of the interference pattern is due to a self induced or "private" potential difference experienced while the particle is in vacuum. We show that all non trivial Born Oppenheimer potentials are "private" potentials. We apply the Born Oppenheimer approximation to interference states. Using our approach we calculate the relative phase of the external heavy particle as well as its uncertainty throughout an interference experiment /entanglement event. We thus complement the Born Oppenheimer approximation for interference states.

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