论文标题
重力检测器重力量化的签名
Signatures of the Quantization of Gravity at Gravitational Wave Detectors
论文作者
论文摘要
我们开发一种形式主义来计算模型重力波检测器对量化重力场的响应。将检测器耦合到量子场会在检测器臂的长度中诱导随机波动（“噪声”）。该噪声的统计特性取决于重力场量子状态的选择。我们表征了真空，相干，热和挤压状态的噪声。对于相干状态，与经典的重力构型相对应，我们发现重力场量化的效果很小。但是，当重力场处于非连锁状态时，手臂长度的标准偏差可能会显着增强。检测这种基本噪声可以为重力量化和重力的存在提供直接证据。
We develop a formalism to calculate the response of a model gravitational wave detector to a quantized gravitational field. Coupling a detector to a quantum field induces stochastic fluctuations ("noise") in the length of the detector arm. The statistical properties of this noise depend on the choice of quantum state of the gravitational field. We characterize the noise for vacuum, coherent, thermal, and squeezed states. For coherent states, corresponding to classical gravitational configurations, we find that the effect of gravitational field quantization is small. However, the standard deviation in the arm length can be enhanced -- possibly significantly -- when the gravitational field is in a non-coherent state. The detection of this fundamental noise could provide direct evidence for the quantization of gravity and for the existence of gravitons.
