Constraints on ultraslow-roll inflation from the third LIGO-Virgo observing run

被引：11
|
作者：
Mu, Bo [1 ,2 ]
Cheng, Gong [1 ]
Liu, Jing [3 ,4 ]
Guo, Zong-Kuan [1 ,2 ,5 ]
机构：
[1] Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, POB 2735, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Sch Phys Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
[3] Univ Chinese Acad Sci, Int Ctr Theoret Phys Asia Pacific, Beijing 100190, Peoples R China
[4] Univ Chinese Acad Sci, Taiji Lab Gravitat Wave Universe, Beijing 100049, Peoples R China
[5] Univ Chinese Acad Sci, Hangzhou Inst Adv Study, Sch Fundamental Phys & Math Sci, Hangzhou 310024, Peoples R China
来源：
PHYSICAL REVIEW D | 2023年 / 107卷 / 04期
基金：
中国国家自然科学基金;
关键词：
PRIMORDIAL BLACK-HOLES; GRAVITATIONAL-RADIATION; UNIVERSE; FLATNESS; HORIZON; MODELS; WAVES;
D O I：
10.1103/PhysRevD.107.043528
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The nonattractor evolution in ultraslow-roll (USR) inflation results in the amplification of superhorizon curvature perturbations and then induces a strong and detectable stochastic gravitational wave background. In this paper, we search for such a stochastic gravitational wave background in data from the third LIGO-Virgo observing run and place constraints on the USR inflationary models. The e-folding number of the USR phase are constrained to be Delta N less than or similar to 2.9 at the 95% confidence level and the power spectrum of curvature perturbations amplified during the USR phase is constrained to be log(10)P(Rp) < -1.7 at the scales 2.9 x 10(5) pc(-1) less than or similar to k less than or similar to 1.7 x 10(11) pc(-1). Besides, we forecast the ability of future experiments to constrain USR inflation, and find P-Rp less than or similar to 10-3.6 for LISA and Taiji, P-Rp less than or similar to 10(-3).3 for Cosmic Explore and Einstein Telescope, P-Rp less than or similar to 10(-5.5) for DECIGO and Big Bang Observer, and P-Rp less than or similar to 10(-5.2) for Square Kilometre Array.
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页数：7
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