论文标题
重力颗粒产生中的量子干扰
Quantum interference in gravitational particle production
论文作者
论文摘要
在通货膨胀的相干振荡期间，对重力颗粒产生的先前数值研究表明，在产生的颗粒的光谱密度中表现出无法解释的波动。我们认为这些特征是由于产生颗粒的相干散射反应的量子干扰所致。我们提供准确的分析公式来计算共形耦合标量场的颗粒产生幅度，包括在运动区域中的干扰效应，在该区域中，可以通过Graviton Exchange解释产生的产量为通气量散射到标量最终状态。
Previous numerical investigations of gravitational particle production during the coherent oscillation period of inflation displayed unexplained fluctuations in the spectral density of the produced particles. We argue that these features are due to the quantum interference of the coherent scattering reactions that produce the particles. We provide accurate analytic formulae to compute the particle production amplitude for a conformally-coupled scalar field, including the interference effect in the kinematic region where the production can be interpreted as inflaton scattering into scalar final states via graviton exchange.
