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Is Gravity Quantum?

zqyin 添加于 2015-7-22 10:03 | 1027 次阅读 | 0 个评论

作者
Bahrami M, Bassi A, McMillen S, Paternostro M, Ulbricht H
摘要
What gravitational field is generated by a massive quantum system in a spatial superposition? This is one of the most important questions in modern physics, and after decades of intensive theoretical and experimental research, we still do not know the answer. On the experimental side, the difficulty lies in the fact that gravity is weak and requires large masses to be detectable. But for large masses, it becomes increasingly difficult to generate spatial quantum superpositions, which live sufficiently long to be detected. A delicate balance between opposite quantum and gravitational demands is needed. Here we show that this can be achieved in an optomechanics scenario. We propose an experimental setup, which allows to decide whether the gravitational field generated by a quantum system in a spatial superposition is the superposition of the two alternatives, or not. We estimate the magnitude of the effect and show that it offers good perspectives for observability. Performing the experiment will mark a breakthrough in our understanding of the relationship between gravity and quantum theory.
详细资料
- 关键词: quant-ph; gr-qc
- 文献种类: Manual Script
- 期卷页: 2015年
- 日期: 2015-7-21
- 发布方式: arXiv e-prints
- 备注:arXiv:1507.05733v1; 5 pages; 4 figures; RevTeX4
学科领域自然科学 » 物理学
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