Primordial black holes and scalar induced gravitational waves from Higgs inflation with noncanonical kinetic term

Lin，Jiong1,2,3; Gao，Shengqing3; Gong，Yungui3; Lu，Yizhou3,4; Wang，Zhongkai3; Zhang，Fengge5

2023-02-15

10.1103/PhysRevD.107.043517

Physical Review D   Impact Factor & Quartile

2470-0010

2470-0029

We resolve the potential-restriction problem in K/G inflation by introducing nonminimal coupling. In this context, Higgs field successfully drives inflation satisfying cosmic microwave background (CMB) observations while enhancing curvature perturbations at small scales, which in turn accounts for primordial black holes (PBHs) and scalar induced gravitational waves (SIGWs). We then uncover the effect of the noncanonical kinetic coupling function in more detail and study its the observational constraint. Besides, we also give the gauge invariant expression for the integral kernel of SIGWs, which is related to terms propagating with the speed of light. Finally, the non-Gaussian effect on PBH abundance and SIGWs is studied. We find that non-Gaussianity makes PBHs form more easily, but its effect on the energy density of SIGWs is negligible.

SCI

English

NI Journal Papers

Others

National Natural Science Foundation of China["11875136","12047502","12247117","11690021"] ; Major Program of the National Natural Science Foundation of China[12247103] ; China Postdoctoral Science Foundation[2022TQ0140]

Astronomy & Astrophysics ; Physics

Astronomy & Astrophysics ; Physics, Particles & Fields

WOS:000964332800013

AMER PHYSICAL SOC

PHYSICS

2-s2.0-85148303507

Scopus

1.Interdisciplinary Center for Theoretical Study,University of Science and Technology of China,Hefei,Anhui,230026,China
2.Peng Huanwu Center for Fundamental Theory,Hefei,Anhui,230026,China
3.School of Physics,Huazhong University of Science and Technology,Wuhan,Hubei,430074,China
4.Department of Physics,Southern University of Science and Technology,Shenzhen,518055,China
5.School of Physics and Astronomy,Sun Yat-sen University,Zhuhai,519088,China

Lin，Jiong,Gao，Shengqing,Gong，Yungui,et al. Primordial black holes and scalar induced gravitational waves from Higgs inflation with noncanonical kinetic term[J]. Physical Review D,2023,107(4).

Lin，Jiong,Gao，Shengqing,Gong，Yungui,Lu，Yizhou,Wang，Zhongkai,&Zhang，Fengge.(2023).Primordial black holes and scalar induced gravitational waves from Higgs inflation with noncanonical kinetic term.Physical Review D,107(4).

Lin，Jiong,et al."Primordial black holes and scalar induced gravitational waves from Higgs inflation with noncanonical kinetic term".Physical Review D 107.4(2023).