论文标题
在$ f（r）$重力中通过动力学标量来扩增原始引力波能量光谱
Amplification of the Primordial Gravitational Waves Energy Spectrum by a Kinetic Scalar in $F(R)$ Gravity
论文作者
论文摘要
在这项工作中，我们考虑了一个组合的理论框架，由$ f（r）$重力和动力学标量字段组成。标量场的动能在其所有宇宙时代的潜力上都占主导地位，并且选择了动力学标势小且不平淡。在这种情况下，我们表明真空$ f（r）$重力的原始重力波能光谱得到显着增强，并且可以在将来的干涉仪中检测到。因此，动力学标量会显着影响通货膨胀时代，因为它延长了持续时间，但对纯$ f（r）$重力原始重力波的能量谱也具有总体放大作用。信号的形式对于所有这些理论都是特征的，因为它基本上是平坦的，应从所有未来的重力波实验中检测到广泛的频率，除非由于某些未知的物理过程而发生了一些未知的阻尼因子。
In this work we consider a combined theoretical framework comprised by $F(R)$ gravity and a kinetic scalar field. The kinetic energy of the scalar field dominates over its potential for all cosmic times, and the kinetic scalar potential is chosen to be small and non-trivial. In this case, we show that the primordial gravitational wave energy spectrum of vacuum $F(R)$ gravity is significantly enhanced and can be detectable in future interferometers. The kinetic scalar thus affects significantly the inflationary era, since it extends its duration, but also has an overall amplifying effect on the energy spectrum of pure $F(R)$ gravity primordial gravitational waves. The form of the signal is characteristic for all these theories, since it is basically flat and should be detectable from all future gravitational wave experiments for a wide range of frequencies, unless some unknown damping factor occurs due to some unknown physical process.
