论文标题
通过耦合到量化的重力场引起的巨大叠加的破坏性
Decoherence of massive superpositions induced by coupling to a quantized gravitational field
论文作者
论文摘要
我们提出了一个简单的计算，导致在线性偶联方向上，大量物体的空间叠加的量子重力诱导的破坏性。该计算的目的是说明重力引起的崩溃可能与其他任何崩溃的起源相同，即由于系统之间的纠缠（此处是一个巨大的物体）及其环境（在这种情况下为重力，但很可能是电磁或任何其他领域）。然后，我们指出，在某些情况下，必须在结论一下大群体的物质波干扰（待量化）时必须小心，可以通过其与重力场的耦合来防止其。我们讨论如何通过实验区分由于纠缠而导致的破坏，由于经典的dephasig以及量子叠加的真正崩溃而引起的脱碳（如果根本存在这样的过程）。
We present a simple calculation leading to the quantum gravitationally-induced decoherence of a spatial superposition of a massive object in the linear coupling regime. The point of this calculation is to illustrate that the gravitationally-induced collapse could be of the same origin as any other collapse, i.e. due to the entanglement between the system (here a massive object) and its environment (in this case gravity, but it could well be the electromagnetic or any other field). We then point out that, in some cases, one has to be careful when concluding that matter-wave interference of large masses (to be quantified) would be prevented by their coupling to the gravitational field. We discuss how to experimentally discriminate between decoherence due to entanglement, decoherence due to classical dephasig as well as a genuine collapse of quantum superpositions (if such a process exists at all).
