Implications of the B-mode Polarization Measurement for Direct Detection of Inflationary Gravitational Waves
Implications of the B-mode Polarization Measurement for Direct Detection of Inflationary Gravitational Waves
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B 模式偏振测量对直接探测暴胀引力波的影响
DOI：
10.1103/physrevd.90.063513
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发表时间：
2014
影响因子：
5
通讯作者：
Naoshi Sugiyama
中科院分区：
文献类型：
--
作者：
Sachiko Kuroyanagi;Shinji Tsujikawa;Takeshi Chiba;Naoshi Sugiyama
本文研究了由可能探测到的宇宙微波背景波偏振模推断出的下一代干涉探测器直接测量暴胀引力波的前景。本文计算了张量标量比大于0.01量级的大场暴胀模型中两种干涉探测器（DECIGO和BBO）的引力波背景谱和信噪比。如果二次势混沌暴胀的再加热温度高（对于升级的DECIGO和BBO），在未来的实验中，有可能在置信水平上达到引力本底的灵敏度。直接检测也是可能的自然通货膨胀的潜力，提供（升级DECIGO）和（BBO）与高于。在暴胀子场和Ricci标量之间具有非最小耦合的四次势中，无论再加热温度如何，都能产生小于0.01量级的可探测引力波。
The prospects for direct measurements of inflationary gravitational waves by next generation interferometric detectors inferred from the possible detection of-mode polarization of the cosmic microwave background are studied. We compute the spectra of the gravitational wave background and the signal-to-noise ratios by two interferometric detectors (DECIGO and BBO) for large-field inflationary models in which the tensor-to-scalar ratio is greater than the order of 0.01. If the reheating temperatureof chaotic inflation with the quadratic potential is high (for upgraded DECIGO andfor BBO), it will be possible to reach the sensitivity of the gravitational background in future experiments atconfidence level. The direct detection is also possible for natural inflation with the potential, provided that(upgraded DECIGO) and(BBO) withhigher than. The quartic potentialwith a nonminimal couplingbetween the inflaton fieldand the Ricci scalargives rise to a detectable level of gravitational waves forsmaller than the order of 0.01, irrespective of the reheating temperature.