Comparing potential-driven DBI-inspired non-minimal kinetic coupling (Dinkic) inflation with observational data

Jun Chen; Wenjie Hou; Taotao Qiu; Defu Hou

doi:10.1088/1674-1137/42/4/045102

Chinese Physics C> 2018, Vol. 42> Issue(4) : 045102 DOI: 10.1088/1674-1137/42/4/045102

Comparing potential-driven DBI-inspired non-minimal kinetic coupling (Dinkic) inflation with observational data

Jun Chen ^1,2,3,, ,
Wenjie Hou ^1,2,3,, ,
Taotao Qiu ^1,2,, ,
Defu Hou ^1,3,,

1.
Key Laboratory of Quark and Lepton Physics(MOE), Central China Normal University, Wuhan 430079, China
2.
Institute of Particle Physics, Central China Normal University, Wuhan 430079, China
3.
Institute of Astrophysics, Central China Normal University, Wuhan 430079, China
4.
Institute of Astrophysics, Central China Normal University, Wuhan 430079, China

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Abstract：
In our previous work[1], a new kind of inflation model was proposed, which has the interesting property that its perturbation equation of motion gets a correction of k⁴, due to the non-linearity of the kinetic term. Nonetheless, the scale-invariance of the power spectrum remains valid, both in large-k and small-k limits. In this paper, we investigate in detail the spectral index, the index running and the tensor/scalar ratio in this model, especially in the potential-driven case, and compare the results with the current PLANCK/BICEP observational data. We also discuss the tensor spectrum in this case, which is expected to be tested by future observations of primordial gravitational waves.
- inflation ,
- power spectrum ,
- gravitaional waves

References

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Jun Chen, Wenjie Hou, Taotao Qiu and Defu Hou. Comparing potential-driven DBI-inspired non-minimal kinetic coupling (Dinkic) inflation with observational data[J]. Chinese Physics C, 2018, 42(4): 045102. doi: 10.1088/1674-1137/42/4/045102

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Received: 2017-11-24
Revised: 2018-01-24

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Supported by NSFC (11405069, 11653002, 11735007, 111375070)

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沈阳化工大学材料科学与工程学院沈阳 110142

Comparing potential-driven DBI-inspired non-minimal kinetic coupling (Dinkic) inflation with observational data

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Comparing potential-driven DBI-inspired non-minimal kinetic coupling (Dinkic) inflation with observational data

Corresponding author: Jun Chen,

Corresponding author: Wenjie Hou,

Corresponding author: Taotao Qiu,

Corresponding author: Defu Hou,

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