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Does universality of free-fall apply to the motion of quantum probes?

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arxiv 1702.07526 v1 pith:3UJL4WGY submitted 2017-02-24 gr-qc quant-ph

Does universality of free-fall apply to the motion of quantum probes?

classification gr-qc quant-ph
keywords quantumequivalencefree-fallprincipleprobesuniversalityweakagreement
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Can quantum-mechanical particles propagating on a fixed spacetime background be approximated as test bodies satisfying the weak equivalence principle? We ultimately answer the question in the negative but find that, when universality of free-fall is assessed locally, a nontrivial agreement between quantum mechanics and the weak equivalence principle exists. Implications for mass sensing by quantum probes are discussed in some details.

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