论文标题

在通货膨胀期间产生增强的平价侵入重力波,违反无效状态

Generating enhanced parity-violating gravitational waves during inflation with violation of the null energy condition

论文作者

Cai, Yong

论文摘要

单场通货膨胀模型中通货膨胀期间违反无效的能量状况(NEC),自然会增强违规侵犯效果(由$Δχ$)的通货膨胀原始重力波(GWS)的幅度,前提是英国人是非微中心的层次,以赋予层次的Chern-Chern-Simim-Simimins Term。经历了NEC竞争阶段后,宇宙以更高的能量尺度(即更大的哈勃参数$ h $)进入随后的缓慢通货膨胀,从而导致增强的几乎规模不变的功率谱(即$ p _ {\ rm t} $ primordial gws y primorordial gws primord primorord gws inm $ priment $ priment $ priment $ priment $ priment $ prement $ $ p。与宇宙微波背景的频带的观察一致。因此,通货膨胀期间对NEC的违规将放大奇偶校验违规对小尺度的观察性(即$ p _ {\ rm t} \cdotΔχ$)。有趣的是,我们的模型在$Δχ$上具有特殊的振荡特征,而其他人可能不会模仿他人。

A violation of the null energy condition (NEC) during inflation in a single-field inflation model will naturally enhance the amplitude of the parity violation effect (defined by $Δχ$) of inflationary primordial gravitational waves (GWs), provided the inflaton is non-minimally coupled to a gravitational Chern-Simons term. After going through the NEC-violating phase, the Universe enters subsequent slow-roll inflation with a higher energy scale (i.e., a greater Hubble parameter $H$), which results in an enhanced nearly scale-invariant power spectrum (i.e., $P_{\rm T}$) of inflationary primordial GWs in the high-frequency band, while $P_{\rm T}$ remains consistent with observations in the frequency band of the cosmic microwave background. Therefore, the violation of NEC during inflation will amplify the observability (i.e., $P_{\rm T}\cdotΔχ$) of the parity violation effect on small scales. Intriguingly, our model has particular oscillatory features on $Δχ$ that may not be mimicked by others.

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