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On two recent proposals for witnessing nonclassical gravity

zqyin 添加于 2017-7-26 09:55 | 1495 次阅读 | 0 个评论

作者
Hall MJW, Reginatto M
摘要
Two very similar proposals have been made recently for witnessing nonclassical features of gravity, by Marletto and Vedral (arxiv.org/abs/1707.06036) and by Bose et al. (arXiv:1707.06050). However, while these proposals are asserted to be very general, they are in fact based on a very strong claim: that quantum systems cannot become entangled via a classical intermediary. We point out that the support provided for this claim is only applicable to a very limited class of quantum-classical interaction models, such as the Koopman model. We show that the claim is also valid for mean-field models, but that it is contradicted by explicit counterexamples based on the configuration-ensemble model. Thus, neither proposal provides a definitive test of nonclassical gravity.
详细资料
- 关键词: quant-ph; gr-qc; hep-th
- 文献种类: Manual Script
- 期卷页: 2017年
- 日期: 2017-7-25
- 发布方式: arXiv e-prints
- 备注:http://arxiv.org/abs/1707.07974v1
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