论文标题
从量子测量中推断重力场叠加
Inference of gravitational field superposition from quantum measurements
论文作者
论文摘要
实验开始探测量子颗粒与超出统一场状态以外的重力场的相互作用。在非相关主义量子力学中，这种实验中的重力场可以写为叠加态。我们从经验上证明，仅通过将重力场能与量子粒子的时间演变解耦，可以避免重力叠加态。此外，这些理论必须指定运动方程有效的首选量子参考框架。在某种程度上，这些特性在理论上是难以置信的，最近的实验提供了间接证据，表明重力具有量子特征。提出的具有超级重力来源的实验将提供更有力的证据，表明重力是非经典的。
Experiments are beginning to probe the interaction of quantum particles with gravitational fields beyond the uniform-field regime. In non-relativistic quantum mechanics, the gravitational field in such experiments can be written as a superposition state. We empirically demonstrate that alternative theories of gravity can avoid gravitational superposition states only by decoupling the gravitational field energy from the quantum particle's time evolution. Furthermore, such theories must specify a preferred quantum reference frame in which the equations of motion are valid. To the extent that these properties are theoretically implausible, recent experiments provide indirect evidence that gravity has quantum features. Proposed experiments with superposed gravitational sources would provide even stronger evidence that gravity is nonclassical.
