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Decoherence due to the Casimir effect?

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arxiv 2409.03866 v3 pith:MOYDNZQS submitted 2024-09-05 quant-ph gr-qchep-th

classification quant-phgr-qchep-th
keywords decoherencecasimirelectronfieldlostpresencepreviouswork
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Open system dynamics of an electron is studied in the presence of radiation field, confined between two parallel conducting pates. It has been suggested in previous works that the quantized zero-point modes of this field lead to finite decoherence effects, possibly due to the Casimir force. However, in this work it is shown that the decoherence found in previous works is due to the sudden switching on of the system-environment interaction and due to the acceleration of the electron enforced by the background paths whose superposition was analyzed. The work discusses important theoretical aspects of the setup and shows that while coherence might be lost due to bremsstrahlung induced by an external or the image potential, it cannot be lost due to the mere presence of the quantum vacuum fluctuations between the plates.

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  1. Does decoherence violate decoupling?

    hep-th 2024-11 conditional novelty 6.0 of 10

    Tracing out a heavy field can appear to decohere a light field, but the apparent decoherence is an artifact of the chosen bipartition; the energy-based EFT projection preserves purity.

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