Primordial non-Gaussianity in noncanonical warm inflation with nonminimal derivative coupling
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arXiv
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| Auteurs principaux: | , , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866908666993573888 |
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| author | Zhang, Xiao-Min Zhao, Run-Qing Feng, Yun-Cai Chu, Peng-Cheng Peng, Zhi-Peng Li, Xi-Bin |
| author_facet | Zhang, Xiao-Min Zhao, Run-Qing Feng, Yun-Cai Chu, Peng-Cheng Peng, Zhi-Peng Li, Xi-Bin |
| contents | This paper presents and investigates non-Gaussian perturbations for the warm k-inflation model that is driven by pure kinetic energy. The two complementary components of the overall non-Gaussianity are the three-point and four-point correlations. The intrinsic non-Gaussian component, denoted as the nonlinear parameter f_{NL}^{int}, is rooted in the three-point correlation for the inflaton field. Meanwhile, the δN part non-Gaussianity, denoted as f_{NL}^{δN}, is the contribution attributed to the four-point correlation function of the inflaton field. In this paper, the above two components in warm k-inflation are individually computed and analyzed. Then, comparisons and discussions between them are conducted, and the non-Gaussian theoretical results are compared with experimental observations to determine the range of model parameters within the allowable range of observation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_16312 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Primordial non-Gaussianity in noncanonical warm inflation with nonminimal derivative coupling Zhang, Xiao-Min Zhao, Run-Qing Feng, Yun-Cai Chu, Peng-Cheng Peng, Zhi-Peng Li, Xi-Bin General Relativity and Quantum Cosmology This paper presents and investigates non-Gaussian perturbations for the warm k-inflation model that is driven by pure kinetic energy. The two complementary components of the overall non-Gaussianity are the three-point and four-point correlations. The intrinsic non-Gaussian component, denoted as the nonlinear parameter f_{NL}^{int}, is rooted in the three-point correlation for the inflaton field. Meanwhile, the δN part non-Gaussianity, denoted as f_{NL}^{δN}, is the contribution attributed to the four-point correlation function of the inflaton field. In this paper, the above two components in warm k-inflation are individually computed and analyzed. Then, comparisons and discussions between them are conducted, and the non-Gaussian theoretical results are compared with experimental observations to determine the range of model parameters within the allowable range of observation. |
| title | Primordial non-Gaussianity in noncanonical warm inflation with nonminimal derivative coupling |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2511.16312 |