Inflationary perturbations in Eddington-inspired Born-Infeld gravity
Abstrak
We briefly introduce the inflation model driven by a massive scalar field in Eddington-inspired Born-Infeld gravity [1] investigated in [2]. We present the recent results of the tensor perturbation in this model investigated in [3]. For short wave-length modes, the perturbation feature is very similar to that of the usual chaotic inflation. For long wave-length modes, the perturbation exhibits a peculiar rise in the power spectrum which may leave a signature in the cosmic microwave background radiation. We also briefly discuss the scalar perturbation in this model. References [1] M. Banados and P. G. Ferreira, Eddington’s theory of gravity and its progeny, Phys. Rev. Lett. 105, 011101 (2010) [arXiv:1006.1769 [astro-ph.CO]]. [2] I. Cho, H.-C. Kim and T. Moon, Precursor of Inflation, Phys. Rev. Lett 111, 071301 (2013) [arXiv:1305.2020 [gr-qc]]. [3] I. Cho and H.-C. Kim, Inflationary Tensor Perturbation in Eddington-inspired Born-Infeld gravity, arXiv:1404.6081 [gr-qc].
Topik & Kata Kunci
Penulis (1)
Inyong Cho
Akses Cepat
- Tahun Terbit
- 2016
- Bahasa
- en
- Sumber Database
- Semantic Scholar
- DOI
- 10.22323/1.224.0074
- Akses
- Open Access ✓